diff --git a/CHANGELOG.md b/CHANGELOG.md
index dcc07dfc..299d394c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,17 @@
 
 ## Version 16
 
+#### 16.1.0
+
+Improved speed, cleaning DOM, better working destroy, and also fixed 2 bugs.
+
+-   Cleaning up `data` attributes from the DOM when finished using them (mainly when elements have finished loading)
+-   Improved `destroy` method, which now also removes lazyload's additions to the DOM elements
+-   Video elements are now only listening to the `loadeddata` event, no longer to `load`
+-   Removed constants containing strings. I thought it would produced shorter minified code, but discovered that terser expands them to strings.
+-   Bugfix: when lazily loading videos, the error `_poster_ is undefined` was thrown
+-   Bugfix: when selecting native lazy loading, the `loading` class was added without knowing whether or not the loading had started
+
 #### 16.0.0
 
 Functional changes:
diff --git a/README.md b/README.md
index c9d2fef8..97b10a21 100644
--- a/README.md
+++ b/README.md
@@ -144,7 +144,7 @@ Please note that the video poster can be lazily loaded too.
 
 ## 👩‍💻 Getting started - Script
 
-The latest, recommended version of LazyLoad is **16.0.0**.
+The latest, recommended version of LazyLoad is **16.1.0**.
 
 Quickly understand how to upgrade from a previous version reading the [practical upgrade guide](UPGRADE.md).
 
@@ -161,14 +161,14 @@ If you prefer to load a polyfill, the regular LazyLoad behaviour is granted.
 The easiest way to use LazyLoad is to include the script from a CDN:
 
 ```html
-<script src="https://cdn.jsdelivr.net/npm/vanilla-lazyload@16.0.0/dist/lazyload.min.js"></script>
+<script src="https://cdn.jsdelivr.net/npm/vanilla-lazyload@16.1.0/dist/lazyload.min.js"></script>
 ```
 
 Or, with the IntersectionObserver polyfill:
 
 ```html
 <script src="https://cdn.jsdelivr.net/npm/intersection-observer@0.7.0/intersection-observer.js"></script>
-<script src="https://cdn.jsdelivr.net/npm/vanilla-lazyload@16.0.0/dist/lazyload.min.js"></script>
+<script src="https://cdn.jsdelivr.net/npm/vanilla-lazyload@16.1.0/dist/lazyload.min.js"></script>
 ```
 
 Then, in your javascript code:
@@ -201,7 +201,7 @@ Include RequireJS:
 Then `require` the AMD version of LazyLoad, like this:
 
 ```js
-var lazyLoadAmdUrl = "https://cdn.jsdelivr.net/npm/vanilla-lazyload@16.0.0/dist/lazyload.amd.min.js";
+var lazyLoadAmdUrl = "https://cdn.jsdelivr.net/npm/vanilla-lazyload@16.1.0/dist/lazyload.amd.min.js";
 var polyfillAmdUrl = "https://cdn.jsdelivr.net/npm/intersection-observer-amd@2.0.1/intersection-observer-amd.js";
 
 /// Dynamically define the dependencies
@@ -247,7 +247,7 @@ Then include the script.
 ```html
 <script
     async
-    src="https://cdn.jsdelivr.net/npm/vanilla-lazyload@16.0.0/dist/lazyload.min.js"
+    src="https://cdn.jsdelivr.net/npm/vanilla-lazyload@16.1.0/dist/lazyload.min.js"
 ></script>
 ```
 
@@ -280,7 +280,7 @@ Then include the script.
 ```html
 <script
     async
-    src="https://cdn.jsdelivr.net/npm/vanilla-lazyload@16.0.0/dist/lazyload.min.js"
+    src="https://cdn.jsdelivr.net/npm/vanilla-lazyload@16.1.0/dist/lazyload.min.js"
 ></script>
 ```
 
diff --git a/currentFeature.md b/currentFeature.md
index 69b5150d..fc898f8a 100644
--- a/currentFeature.md
+++ b/currentFeature.md
@@ -1,2 +1 @@
-# Current feature: ___
-
+# Current feature:
diff --git a/demos/cancel_on_exit.html b/demos/cancel_on_exit.html
index e86fceb3..666bd625 100644
--- a/demos/cancel_on_exit.html
+++ b/demos/cancel_on_exit.html
@@ -86,37 +86,6 @@ <h1>Cancel on exit demo</h1>
                         />
                     </a>
                 </li>
-                <!--  <li>
-                    <a
-                        href="#"
-                        class="lazy"
-                        data-bg="https://via.placeholder.com/220x280?text=Img+05+BG"
-                        data-bg-hidpi="https://via.placeholder.com/440x560?text=Img+05+BG"
-                    ></a>
-                </li>
-                <li>
-                    <a
-                        href="#"
-                        class="lazy"
-                        data-bg="https://via.placeholder.com/220x280?text=Img+06+BG"
-                    ></a>
-                </li>
-                <li>
-                    <a
-                        href="#"
-                        class="lazy"
-                        data-bg="https://via.placeholder.com/220x280?text=Img+07+BG"
-                        data-bg-hidpi="https://via.placeholder.com/440x560?text=Img+07+BG"
-                    ></a>
-                </li>
-                <li>
-                    <a
-                        href="#"
-                        class="lazy"
-                        data-bg="https://via.placeholder.com/220x280?text=Img+08+BG"
-                        data-bg-hidpi="https://via.placeholder.com/440x560?text=Img+08+BG"
-                    ></a>
-                </li> -->
                 <li>
                     <a href="#">
                         <img
@@ -245,7 +214,6 @@ <h1>Cancel on exit demo</h1>
                         />
                     </a>
                 </li>
-                <!-- <iframe class="lazy" data-src="https://imoladomicilio.it/" frameborder="0"></iframe> -->
                 <li>
                     <a href="#">
                         <img
@@ -290,7 +258,6 @@ <h1>Cancel on exit demo</h1>
                         />
                     </a>
                 </li>
-                <!-- <iframe class="lazy" data-src="iframes/i02.html" frameborder="0"></iframe> -->
                 <li>
                     <a href="#">
                         <img
@@ -313,7 +280,6 @@ <h1>Cancel on exit demo</h1>
                         />
                     </a>
                 </li>
-                <!-- <iframe class="lazy" data-src="iframes/i03.html" frameborder="0"></iframe> -->
                 <li>
                     <a href="#">
                         <img
diff --git a/demos/lazily_load_lazyLoad.html b/demos/lazily_load_lazyLoad.html
index f78a9257..371e574e 100644
--- a/demos/lazily_load_lazyLoad.html
+++ b/demos/lazily_load_lazyLoad.html
@@ -1259,7 +1259,7 @@ <h1>Lazyly load lazyload demo</h1>
                 <figcaption>Lorem ipsum 15</figcaption>
             </figure>
         </div>
-        <script src="../dist/lazyload.js"></script>
+        <script src="../dist/lazyload.min.js"></script>
         <script>
             (function () {
                 var lazyLoadInstances = [];
diff --git a/dist/lazyload.amd.js b/dist/lazyload.amd.js
index 6fea35e2..46408fcc 100644
--- a/dist/lazyload.amd.js
+++ b/dist/lazyload.amd.js
@@ -25,7 +25,7 @@ define(function () { 'use strict';
   var isHiDpi = runningOnBrowser && window.devicePixelRatio > 1;
 
   var defaultSettings = {
-    elements_selector: "img",
+    elements_selector: "IMG",
     container: isBot || runningOnBrowser ? document : null,
     threshold: 300,
     thresholds: null,
@@ -140,9 +140,11 @@ define(function () { 'use strict';
   var hasStatusError = function hasStatusError(element) {
     return getStatus(element) === statusError;
   };
-  var statusesAfterLoading = [statusLoading, statusApplied, statusLoaded, statusError];
-  var hasStatusAfterLoading = function hasStatusAfterLoading(element) {
-    return statusesAfterLoading.indexOf(getStatus(element)) > -1;
+  var hasStatusNative = function hasStatusNative(element) {
+    return getStatus(element) === statusNative;
+  };
+  var hadStartedLoading = function hadStartedLoading(element) {
+    return !hasEmptyStatus(element);
   };
 
   var safeCallback = function safeCallback(callback, arg1, arg2, arg3) {
@@ -181,7 +183,7 @@ define(function () { 'use strict';
   };
 
   var addTempImage = function addTempImage(element) {
-    element.llTempImage = document.createElement("img");
+    element.llTempImage = document.createElement("IMG");
   };
   var deleteTempImage = function deleteTempImage(element) {
     delete element.llTempImage;
@@ -199,6 +201,9 @@ define(function () { 'use strict';
   var resetObserver = function resetObserver(observer) {
     observer.disconnect();
   };
+  var unobserveIfRequired = function unobserveIfRequired(element, settings, instance) {
+    if (settings.unobserve_entered) unobserve(element, instance);
+  };
 
   var updateLoadingCount = function updateLoadingCount(instance, delta) {
     if (!instance) return;
@@ -219,11 +224,6 @@ define(function () { 'use strict';
     return instance.toLoadCount > 0;
   };
 
-  var _src_ = "src";
-  var _srcset_ = "srcset";
-  var _sizes_ = "sizes";
-  var _poster_ = "poster";
-  var _PICTURE_ = "PICTURE";
   var getSourceTags = function getSourceTags(parentTag) {
     var sourceTags = [];
 
@@ -254,9 +254,9 @@ define(function () { 'use strict';
     }
 
     var originalAttributes = {};
-    originalAttributes[_src_] = element.getAttribute(_src_);
-    originalAttributes[_srcset_] = element.getAttribute(_srcset_);
-    originalAttributes[_sizes_] = element.getAttribute(_sizes_);
+    originalAttributes["src"] = element.getAttribute("src");
+    originalAttributes["srcset"] = element.getAttribute("srcset");
+    originalAttributes["sizes"] = element.getAttribute("sizes");
     element.llOriginalAttrs = originalAttributes;
   };
   var restoreOriginalImageAttributes = function restoreOriginalImageAttributes(element) {
@@ -265,30 +265,34 @@ define(function () { 'use strict';
     }
 
     var originalAttributes = element.llOriginalAttrs;
-    setAttributeIfValue(element, _src_, originalAttributes[_src_]);
-    setAttributeIfValue(element, _srcset_, originalAttributes[_srcset_]);
-    setAttributeIfValue(element, _sizes_, originalAttributes[_sizes_]);
+    setAttributeIfValue(element, "src", originalAttributes["src"]);
+    setAttributeIfValue(element, "srcset", originalAttributes["srcset"]);
+    setAttributeIfValue(element, "sizes", originalAttributes["sizes"]);
   };
   var setImageAttributes = function setImageAttributes(element, settings) {
-    setAttributeIfValue(element, _sizes_, getData(element, settings.data_sizes));
-    setAttributeIfValue(element, _srcset_, getData(element, settings.data_srcset));
-    setAttributeIfValue(element, _src_, getData(element, settings.data_src));
+    setAttributeIfValue(element, "sizes", getData(element, settings.data_sizes));
+    setAttributeIfValue(element, "srcset", getData(element, settings.data_srcset));
+    setAttributeIfValue(element, "src", getData(element, settings.data_src));
   };
   var resetImageAttributes = function resetImageAttributes(element) {
-    resetAttribute(element, _src_);
-    resetAttribute(element, _srcset_);
-    resetAttribute(element, _sizes_);
+    resetAttribute(element, "src");
+    resetAttribute(element, "srcset");
+    resetAttribute(element, "sizes");
   };
   var forEachPictureSource = function forEachPictureSource(element, fn) {
     var parent = element.parentNode;
 
-    if (!parent || parent.tagName !== _PICTURE_) {
+    if (!parent || parent.tagName !== "PICTURE") {
       return;
     }
 
     var sourceTags = getSourceTags(parent);
     sourceTags.forEach(fn);
   };
+  var forEachVideoSource = function forEachVideoSource(element, fn) {
+    var sourceTags = getSourceTags(element);
+    sourceTags.forEach(fn);
+  };
   var restoreOriginalAttributesImg = function restoreOriginalAttributesImg(element) {
     forEachPictureSource(element, function (sourceTag) {
       restoreOriginalImageAttributes(sourceTag);
@@ -310,15 +314,14 @@ define(function () { 'use strict';
     resetImageAttributes(element);
   };
   var setSourcesIframe = function setSourcesIframe(element, settings) {
-    setAttributeIfValue(element, _src_, getData(element, settings.data_src));
+    setAttributeIfValue(element, "src", getData(element, settings.data_src));
   };
   var setSourcesVideo = function setSourcesVideo(element, settings) {
-    var sourceTags = getSourceTags(element);
-    sourceTags.forEach(function (sourceTag) {
-      setAttributeIfValue(sourceTag, _src_, getData(sourceTag, settings.data_src));
+    forEachVideoSource(element, function (sourceTag) {
+      setAttributeIfValue(sourceTag, "src", getData(sourceTag, settings.data_src));
     });
-    setAttributeIfValue(element, _poster_, getData(element, settings.data_poster));
-    setAttributeIfValue(element, _src_, getData(element, settings.data_src));
+    setAttributeIfValue(element, "poster", getData(element, settings.data_poster));
+    setAttributeIfValue(element, "src", getData(element, settings.data_src));
     element.load();
   };
   var setSourcesFunctions = {
@@ -332,12 +335,8 @@ define(function () { 'use strict';
     var bgDataValue = isHiDpi && bgHiDpiValue ? bgHiDpiValue : bg1xValue;
     if (!bgDataValue) return;
     element.style.backgroundImage = "url(\"".concat(bgDataValue, "\")");
-    getTempImage(element).setAttribute(_src_, bgDataValue); // Annotate and notify loading
-
-    updateLoadingCount(instance, +1);
-    addClass(element, settings.class_loading);
-    setStatus(element, statusLoading);
-    safeCallback(settings.callback_loading, element, instance);
+    getTempImage(element).setAttribute("src", bgDataValue);
+    manageLoading(element, settings, instance);
   }; // NOTE: THE TEMP IMAGE TRICK CANNOT BE DONE WITH data-multi-bg
   // BECAUSE INSIDE ITS VALUES MUST BE WRAPPED WITH URL() AND ONE OF THEM
   // COULD BE A GRADIENT BACKGROUND IMAGE
@@ -351,35 +350,80 @@ define(function () { 'use strict';
       return;
     }
 
-    element.style.backgroundImage = bgDataValue; // Annotate and notify applied
+    element.style.backgroundImage = bgDataValue;
+    manageApplied(element, settings, instance);
+  };
+  var setSources = function setSources(element, settings) {
+    var setSourcesFunction = setSourcesFunctions[element.tagName];
 
+    if (!setSourcesFunction) {
+      return;
+    }
+
+    setSourcesFunction(element, settings);
+  };
+  var manageApplied = function manageApplied(element, settings, instance) {
     addClass(element, settings.class_applied);
     setStatus(element, statusApplied);
-    safeCallback(settings.callback_applied, element, instance);
+    removeDataMultiBackground(element, settings);
 
     if (settings.unobserve_completed) {
       // Unobserve now because we can't do it on load
       unobserve(element, settings);
     }
-  };
-  var setSources = function setSources(element, settings, instance) {
-    var setSourcesFunction = setSourcesFunctions[element.tagName];
-
-    if (!setSourcesFunction) {
-      return;
-    }
-
-    setSourcesFunction(element, settings); // Annotate and notify loading
 
+    safeCallback(settings.callback_applied, element, instance);
+  };
+  var manageLoading = function manageLoading(element, settings, instance) {
     updateLoadingCount(instance, +1);
     addClass(element, settings.class_loading);
     setStatus(element, statusLoading);
     safeCallback(settings.callback_loading, element, instance);
+  }; // REMOVE DATA ATTRIBUTES --------------
+
+  var removeDataImg = function removeDataImg(element, settings) {
+    setData(element, settings.data_src, null);
+    setData(element, settings.data_srcset, null);
+    setData(element, settings.data_sizes, null);
+    forEachPictureSource(element, function (sourceTag) {
+      setData(sourceTag, settings.data_srcset, null);
+      setData(sourceTag, settings.data_sizes, null);
+    });
+  };
+  var removeDataIframe = function removeDataIframe(element, settings) {
+    setData(element, settings.data_src, null);
+  };
+  var removeDataVideo = function removeDataVideo(element, settings) {
+    setData(element, settings.data_src, null);
+    setData(element, settings.data_poster, null);
+    forEachVideoSource(element, function (sourceTag) {
+      setData(sourceTag, settings.data_src, null);
+    });
+  };
+  var removeDataFunctions = {
+    IMG: removeDataImg,
+    IFRAME: removeDataIframe,
+    VIDEO: removeDataVideo
+  };
+  var removeDataBackground = function removeDataBackground(element, settings) {
+    setData(element, settings.data_bg, null);
+    setData(element, settings.data_bg_hidpi, null);
+  };
+  var removeDataMultiBackground = function removeDataMultiBackground(element, settings) {
+    setData(element, settings.data_bg_multi, null);
+    setData(element, settings.data_bg_multi_hidpi, null);
+  };
+  var removeDataAttributes = function removeDataAttributes(element, settings) {
+    var removeDataFunction = removeDataFunctions[element.tagName];
+
+    if (removeDataFunction) {
+      removeDataFunction(element, settings);
+      return;
+    }
+
+    removeDataBackground(element, settings);
   };
 
-  var genericLoadEventName = "load";
-  var mediaLoadEventName = "loadeddata";
-  var errorEventName = "error";
   var elementsWithLoadEvent = ["IMG", "IFRAME", "VIDEO"];
   var hasLoadEvent = function hasLoadEvent(element) {
     return elementsWithLoadEvent.indexOf(element.tagName) > -1;
@@ -401,12 +445,9 @@ define(function () { 'use strict';
   };
   var addEventListeners = function addEventListeners(element, loadHandler, errorHandler) {
     if (!hasEventListeners(element)) element.llEvLisnrs = {};
-    addEventListener(element, genericLoadEventName, loadHandler);
-    addEventListener(element, errorEventName, errorHandler);
-
-    if (element.tagName === "VIDEO") {
-      addEventListener(element, mediaLoadEventName, loadHandler);
-    }
+    var loadEventName = element.tagName === "VIDEO" ? "loadeddata" : "load";
+    addEventListener(element, loadEventName, loadHandler);
+    addEventListener(element, "error", errorHandler);
   };
   var removeEventListeners = function removeEventListeners(element) {
     if (!hasEventListeners(element)) {
@@ -433,18 +474,21 @@ define(function () { 'use strict';
     }
   };
   var loadHandler = function loadHandler(event, element, settings, instance) {
+    var goingNative = hasStatusNative(element);
     doneHandler(element, settings, instance);
     addClass(element, settings.class_loaded);
     setStatus(element, statusLoaded);
+    removeDataAttributes(element, settings);
     safeCallback(settings.callback_loaded, element, instance);
-    checkFinish(settings, instance);
+    if (!goingNative) checkFinish(settings, instance);
   };
   var errorHandler = function errorHandler(event, element, settings, instance) {
+    var goingNative = hasStatusNative(element);
     doneHandler(element, settings, instance);
     addClass(element, settings.class_error);
     setStatus(element, statusError);
     safeCallback(settings.callback_error, element, instance);
-    checkFinish(settings, instance);
+    if (!goingNative) checkFinish(settings, instance);
   };
   var addOneShotEventListeners = function addOneShotEventListeners(element, settings, instance) {
     var elementToListenTo = getTempImage(element) || element;
@@ -476,7 +520,8 @@ define(function () { 'use strict';
 
   var loadRegular = function loadRegular(element, settings, instance) {
     addOneShotEventListeners(element, settings, instance);
-    setSources(element, settings, instance);
+    setSources(element, settings);
+    manageLoading(element, settings, instance);
   };
 
   var load = function load(element, settings, instance) {
@@ -485,72 +530,53 @@ define(function () { 'use strict';
     } else {
       loadBackground(element, settings, instance);
     }
-
-    checkFinish(settings, instance);
   };
   var loadNative = function loadNative(element, settings, instance) {
     addOneShotEventListeners(element, settings, instance);
-    setSources(element, settings, instance);
+    setSources(element, settings);
+    removeDataAttributes(element, settings);
     setStatus(element, statusNative);
-    checkFinish(settings, instance);
   };
 
-  var cancelIfLoading = function cancelIfLoading(element, entry, settings, instance) {
-    if (element.tagName !== "IMG") {
-      // Can't cancel loading on anything but images
-      return;
-    }
+  var cancelLoadingIfRequired = function cancelLoadingIfRequired(element, entry, settings, instance) {
+    if (!settings.cancel_on_exit) return;
+    if (!hasStatusLoading(element)) return;
+    if (element.tagName !== "IMG") return; //Works only on images
 
     removeEventListeners(element);
     resetSourcesImg(element);
     restoreOriginalAttributesImg(element);
     removeClass(element, settings.class_loading);
     updateLoadingCount(instance, -1);
-    safeCallback(settings.callback_cancel, element, entry, instance); // setTimeout is needed because the "callback_cancel" implementation
-    // could be out of the main thread, e.g. `img.setAttribute("src", "")`
-
-    setTimeout(function () {
-      resetStatus(element);
-    }, 0);
+    resetStatus(element);
+    safeCallback(settings.callback_cancel, element, entry, instance);
   };
 
   var onEnter = function onEnter(element, entry, settings, instance) {
     safeCallback(settings.callback_enter, element, entry, instance);
-
-    if (hasStatusAfterLoading(element)) {
-      return; //Prevent loading it again
-    }
-
-    if (settings.unobserve_entered) {
-      unobserve(element, instance);
-    }
+    unobserveIfRequired(element, settings, instance);
+    if (hadStartedLoading(element)) return; //Prevent loading it again
 
     load(element, settings, instance);
   };
   var onExit = function onExit(element, entry, settings, instance) {
-    if (hasEmptyStatus(element)) {
-      return; //Ignore the first pass, at landing
-    }
-
-    if (settings.cancel_on_exit && hasStatusLoading(element)) {
-      cancelIfLoading(element, entry, settings, instance);
-    }
+    if (hasEmptyStatus(element)) return; //Ignore the first pass, at landing
 
+    cancelLoadingIfRequired(element, entry, settings, instance);
     safeCallback(settings.callback_exit, element, entry, instance);
   };
 
-  var nativeLazyTags = ["IMG", "IFRAME"];
-  var loadingString = "loading";
+  var tagsWithNativeLazy = ["IMG", "IFRAME"];
   var shouldUseNative = function shouldUseNative(settings) {
-    return settings.use_native && loadingString in HTMLImageElement.prototype;
+    return settings.use_native && "loading" in HTMLImageElement.prototype;
   };
   var loadAllNative = function loadAllNative(elements, settings, instance) {
     elements.forEach(function (element) {
-      if (nativeLazyTags.indexOf(element.tagName) === -1) {
+      if (tagsWithNativeLazy.indexOf(element.tagName) === -1) {
         return;
       }
 
-      element.setAttribute(loadingString, "lazy"); //TODO: Move inside the loadNative method
+      element.setAttribute("loading", "lazy"); //TODO: Move inside the loadNative method
 
       loadNative(element, settings, instance);
     });
@@ -661,7 +687,12 @@ define(function () { 'use strict';
       // Observer
       if (this._observer) {
         this._observer.disconnect();
-      }
+      } // Clean custom attributes on elements
+
+
+      queryElements(this._settings).forEach(function (element) {
+        delete element.llOriginalAttrs;
+      }); // Delete all internal props
 
       delete this._observer;
       delete this._settings;
diff --git a/dist/lazyload.amd.min.js b/dist/lazyload.amd.min.js
index 7dd77d56..38159136 100644
--- a/dist/lazyload.amd.min.js
+++ b/dist/lazyload.amd.min.js
@@ -1 +1 @@
-define((function(){"use strict";function n(){return(n=Object.assign||function(n){for(var t=1;t<arguments.length;t++){var e=arguments[t];for(var i in e)Object.prototype.hasOwnProperty.call(e,i)&&(n[i]=e[i])}return n}).apply(this,arguments)}var t="undefined"!=typeof window,e=t&&!("onscroll"in window)||"undefined"!=typeof navigator&&/(gle|ing|ro)bot|crawl|spider/i.test(navigator.userAgent),i=t&&"IntersectionObserver"in window,o=t&&"classList"in document.createElement("p"),r=t&&window.devicePixelRatio>1,a={elements_selector:"img",container:e||t?document:null,threshold:300,thresholds:null,data_src:"src",data_srcset:"srcset",data_sizes:"sizes",data_bg:"bg",data_bg_hidpi:"bg-hidpi",data_bg_multi:"bg-multi",data_bg_multi_hidpi:"bg-multi-hidpi",data_poster:"poster",class_applied:"applied",class_loading:"loading",class_loaded:"loaded",class_error:"error",unobserve_completed:!0,unobserve_entered:!1,cancel_on_exit:!1,callback_enter:null,callback_exit:null,callback_applied:null,callback_loading:null,callback_loaded:null,callback_error:null,callback_finish:null,callback_cancel:null,use_native:!1},c=function(t){return n({},a,t)},l=function(n,t){var e,i=new n(t);try{e=new CustomEvent("LazyLoad::Initialized",{detail:{instance:i}})}catch(n){(e=document.createEvent("CustomEvent")).initCustomEvent("LazyLoad::Initialized",!1,!1,{instance:i})}window.dispatchEvent(e)},s=function(n,t){return n.getAttribute("data-"+t)},u=function(n){return s(n,"ll-status")},d=function(n,t){return function(n,t,e){var i="data-"+t;null!==e?n.setAttribute(i,e):n.removeAttribute(i)}(n,"ll-status",t)},f=function(n){return d(n,null)},_=function(n){return null===u(n)},g=["loading","applied","loaded","error"],v=function(n,t,e,i){n&&(void 0===i?void 0===e?n(t):n(t,e):n(t,e,i))},b=function(n,t){o?n.classList.add(t):n.className+=(n.className?" 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e=n.parentNode;e&&"PICTURE"===e.tagName&&A(e).forEach(t)},x={IMG:function(n,t){N(n,(function(n){y(n),z(n,t)})),y(n),z(n,t)},IFRAME:function(n,t){L(n,"src",s(n,t.data_src))},VIDEO:function(n,t){A(n).forEach((function(n){L(n,"src",s(n,t.data_src))})),L(n,"poster",s(n,t.data_poster)),L(n,"src",s(n,t.data_src)),n.load()}},M=function(n,t,e){var i=x[n.tagName];i&&(i(n,t),E(e,1),b(n,t.class_loading),d(n,"loading"),v(t.callback_loading,n,e))},R=["IMG","IFRAME","VIDEO"],T=function(n,t){!t||function(n){return n.loadingCount>0}(t)||function(n){return n.toLoadCount>0}(t)||v(n.callback_finish,t)},G=function(n,t,e){n.addEventListener(t,e),n.llEvLisnrs[t]=e},D=function(n,t,e){n.removeEventListener(t,e)},F=function(n){return!!n.llEvLisnrs},P=function(n){if(F(n)){var t=n.llEvLisnrs;for(var e in t){var i=t[e];D(n,e,i)}delete n.llEvLisnrs}},S=function(n,t,e){!function(n){delete n.llTempImage}(n),E(e,-1),function(n){n&&(n.toLoadCount-=1)}(e),p(n,t.class_loading),t.unobserve_completed&&m(n,e)},V=function(n,t,e){var i=h(n)||n;if(!F(i)){!function(n,t,e){F(n)||(n.llEvLisnrs={}),G(n,"load",t),G(n,"error",e),"VIDEO"===n.tagName&&G(n,"loadeddata",t)}(i,(function(o){!function(n,t,e,i){S(t,e,i),b(t,e.class_loaded),d(t,"loaded"),v(e.callback_loaded,t,i),T(e,i)}(0,n,t,e),P(i)}),(function(o){!function(n,t,e,i){S(t,e,i),b(t,e.class_error),d(t,"error"),v(e.callback_error,t,i),T(e,i)}(0,n,t,e),P(i)}))}},j=function(n,t,e){!function(n){n.llTempImage=document.createElement("img")}(n),V(n,t,e),function(n,t,e){var i=s(n,t.data_bg),o=s(n,t.data_bg_hidpi),a=r&&o?o:i;a&&(n.style.backgroundImage='url("'.concat(a,'")'),h(n).setAttribute("src",a),E(e,1),b(n,t.class_loading),d(n,"loading"),v(t.callback_loading,n,e))}(n,t,e),function(n,t,e){var 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i=c(n);this._settings=i,this.loadingCount=0,Q(i,this),function(n,e){t&&window.addEventListener("online",(function(){nn(n,e)}))}(i,this),this.update(e)};return tn.prototype={update:function(n){var t,o,r=this._settings,a=Z(n,r);(I(this,a.length),!e&&i)?J(r)?K(a,r,this):(t=this._observer,o=a,function(n){n.disconnect()}(t),function(n,t){t.forEach((function(t){n.observe(t)}))}(t,o)):this.loadAll(a)},destroy:function(){this._observer&&this._observer.disconnect(),delete this._observer,delete this._settings,delete this.loadingCount,delete this.toLoadCount},loadAll:function(n){var t=this,e=this._settings;Z(n,e).forEach((function(n){U(n,e,t)}))}},tn.load=function(n,t){var e=c(t);U(n,e)},tn.resetStatus=function(n){f(n)},t&&function(n,t){if(t)if(t.length)for(var e,i=0;e=t[i];i+=1)l(n,e);else l(n,t)}(tn,window.lazyLoadOptions),tn}));
+define((function(){"use strict";function n(){return(n=Object.assign||function(n){for(var t=1;t<arguments.length;t++){var e=arguments[t];for(var i in e)Object.prototype.hasOwnProperty.call(e,i)&&(n[i]=e[i])}return n}).apply(this,arguments)}var t="undefined"!=typeof window,e=t&&!("onscroll"in window)||"undefined"!=typeof navigator&&/(gle|ing|ro)bot|crawl|spider/i.test(navigator.userAgent),i=t&&"IntersectionObserver"in window,a=t&&"classList"in document.createElement("p"),r=t&&window.devicePixelRatio>1,o={elements_selector:"IMG",container:e||t?document:null,threshold:300,thresholds:null,data_src:"src",data_srcset:"srcset",data_sizes:"sizes",data_bg:"bg",data_bg_hidpi:"bg-hidpi",data_bg_multi:"bg-multi",data_bg_multi_hidpi:"bg-multi-hidpi",data_poster:"poster",class_applied:"applied",class_loading:"loading",class_loaded:"loaded",class_error:"error",unobserve_completed:!0,unobserve_entered:!1,cancel_on_exit:!1,callback_enter:null,callback_exit:null,callback_applied:null,callback_loading:null,callback_loaded:null,callback_error:null,callback_finish:null,callback_cancel:null,use_native:!1},c=function(t){return n({},o,t)},l=function(n,t){var e,i=new n(t);try{e=new CustomEvent("LazyLoad::Initialized",{detail:{instance:i}})}catch(n){(e=document.createEvent("CustomEvent")).initCustomEvent("LazyLoad::Initialized",!1,!1,{instance:i})}window.dispatchEvent(e)},s=function(n,t){return n.getAttribute("data-"+t)},u=function(n,t,e){var i="data-"+t;null!==e?n.setAttribute(i,e):n.removeAttribute(i)},d=function(n){return s(n,"ll-status")},f=function(n,t){return u(n,"ll-status",t)},_=function(n){return f(n,null)},g=function(n){return null===d(n)},v=function(n){return"native"===d(n)},b=function(n,t,e,i){n&&(void 0===i?void 0===e?n(t):n(t,e):n(t,e,i))},p=function(n,t){a?n.classList.add(t):n.className+=(n.className?" 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n.isIntersecting||n.intersectionRatio>0}(n)?function(n,t,e,i){b(e.callback_enter,n,t,i),function(n,t,e){t.unobserve_entered&&E(n,e)}(n,e,i),function(n){return!g(n)}(n)||K(n,e,i)}(n.target,n,t,e):function(n,t,e,i){g(n)||(function(n,t,e,i){e.cancel_on_exit&&function(n){return"loading"===d(n)}(n)&&"IMG"===n.tagName&&(q(n),function(n){N(n,(function(n){M(n)})),M(n)}(n),function(n){N(n,(function(n){O(n)})),O(n)}(n),h(n,e.class_loading),I(i,-1),_(n),b(e.callback_cancel,n,t,i))}(n,t,e,i),b(e.callback_exit,n,t,i))}(n.target,n,t,e)}))},Y=function(n){return Array.prototype.slice.call(n)},Z=function(n){return n.container.querySelectorAll(n.elements_selector)},nn=function(n){return function(n){return"error"===d(n)}(n)},tn=function(n,t){return function(n){return Y(n).filter(g)}(n||Z(t))},en=function(n,e){var a=c(n);this._settings=a,this.loadingCount=0,function(n,t){i&&!W(n)&&(t._observer=new IntersectionObserver((function(e){X(e,n,t)}),function(n){return{root:n.container===document?null:n.container,rootMargin:n.thresholds||n.threshold+"px"}}(n)))}(a,this),function(n,e){t&&window.addEventListener("online",(function(){!function(n,t){var e;(e=Z(n),Y(e).filter(nn)).forEach((function(t){h(t,n.class_error),_(t)})),t.update()}(n,e)}))}(a,this),this.update(e)};return en.prototype={update:function(n){var t,a,r=this._settings,o=tn(n,r);A(this,o.length),!e&&i?W(r)?function(n,t,e){n.forEach((function(n){-1!==Q.indexOf(n.tagName)&&(n.setAttribute("loading","lazy"),function(n,t,e){B(n,t,e),G(n,t),V(n,t),f(n,"native")}(n,t,e))})),A(e,0)}(o,r,this):(a=o,function(n){n.disconnect()}(t=this._observer),function(n,t){t.forEach((function(t){n.observe(t)}))}(t,a)):this.loadAll(o)},destroy:function(){this._observer&&this._observer.disconnect(),Z(this._settings).forEach((function(n){delete n.llOriginalAttrs})),delete this._observer,delete this._settings,delete this.loadingCount,delete this.toLoadCount},loadAll:function(n){var t=this,e=this._settings;tn(n,e).forEach((function(n){K(n,e,t)}))}},en.load=function(n,t){var e=c(t);K(n,e)},en.resetStatus=function(n){_(n)},t&&function(n,t){if(t)if(t.length)for(var e,i=0;e=t[i];i+=1)l(n,e);else l(n,t)}(en,window.lazyLoadOptions),en}));
diff --git a/dist/lazyload.esm.js b/dist/lazyload.esm.js
index 11486ebf..1430922c 100644
--- a/dist/lazyload.esm.js
+++ b/dist/lazyload.esm.js
@@ -11,7 +11,7 @@ const supportsClassList = runningOnBrowser && "classList" in document.createElem
 const isHiDpi = runningOnBrowser && window.devicePixelRatio > 1;
 
 const defaultSettings = {
-    elements_selector: "img",
+    elements_selector: "IMG",
     container: isBot || runningOnBrowser ? document : null,
     threshold: 300,
     thresholds: null,
@@ -41,7 +41,7 @@ const defaultSettings = {
     use_native: false
 };
 
-const getExtendedSettings = customSettings => {
+const getExtendedSettings = (customSettings) => {
     return Object.assign({}, defaultSettings, customSettings);
 };
 
@@ -107,10 +107,8 @@ const resetStatus = (element) => setStatus(element, null);
 const hasEmptyStatus = (element) => getStatus(element) === null;
 const hasStatusLoading = (element) => getStatus(element) === statusLoading;
 const hasStatusError = (element) => getStatus(element) === statusError;
-
-const statusesAfterLoading = [statusLoading, statusApplied, statusLoaded, statusError];
-const hasStatusAfterLoading = (element) =>
-    statusesAfterLoading.indexOf(getStatus(element)) > -1;
+const hasStatusNative = (element) => getStatus(element) === statusNative;
+const hadStartedLoading = (element) => !hasEmptyStatus(element);
 
 const safeCallback = (callback, arg1, arg2, arg3) => {
 	if (!callback) {
@@ -147,15 +145,15 @@ const removeClass = (element, className) => {
 		replace(/\s+$/, "");
 };
 
-const addTempImage = element => {
-    element.llTempImage = document.createElement("img");
+const addTempImage = (element) => {
+    element.llTempImage = document.createElement("IMG");
 };
 
-const deleteTempImage = element => {
+const deleteTempImage = (element) => {
     delete element.llTempImage;
 };
 
-const getTempImage = element => element.llTempImage;
+const getTempImage = (element) => element.llTempImage;
 
 const unobserve = (element, instance) => {
     if (!instance) return;
@@ -168,6 +166,10 @@ const resetObserver = (observer) => {
     observer.disconnect();
 };
 
+const unobserveIfRequired = (element, settings, instance) => {
+    if (settings.unobserve_entered) unobserve(element, instance);
+};
+
 const updateLoadingCount = (instance, delta) => {
     if (!instance) return;
     instance.loadingCount += delta;
@@ -187,12 +189,6 @@ const isSomethingLoading = (instance) => instance.loadingCount > 0;
 
 const haveElementsToLoad = (instance) => instance.toLoadCount > 0;
 
-const _src_ = "src";
-const _srcset_ = "srcset";
-const _sizes_ = "sizes";
-const _poster_ = "poster";
-const _PICTURE_ = "PICTURE";
-
 const getSourceTags = (parentTag) => {
     let sourceTags = [];
     for (let i = 0, childTag; (childTag = parentTag.children[i]); i += 1) {
@@ -223,9 +219,9 @@ const saveOriginalImageAttributes = (element) => {
         return;
     }
     const originalAttributes = {};
-    originalAttributes[_src_] = element.getAttribute(_src_);
-    originalAttributes[_srcset_] = element.getAttribute(_srcset_);
-    originalAttributes[_sizes_] = element.getAttribute(_sizes_);
+    originalAttributes["src"] = element.getAttribute("src");
+    originalAttributes["srcset"] = element.getAttribute("srcset");
+    originalAttributes["sizes"] = element.getAttribute("sizes");
     element.llOriginalAttrs = originalAttributes;
 };
 
@@ -234,32 +230,37 @@ const restoreOriginalImageAttributes = (element) => {
         return;
     }
     const originalAttributes = element.llOriginalAttrs;
-    setAttributeIfValue(element, _src_, originalAttributes[_src_]);
-    setAttributeIfValue(element, _srcset_, originalAttributes[_srcset_]);
-    setAttributeIfValue(element, _sizes_, originalAttributes[_sizes_]);
+    setAttributeIfValue(element, "src", originalAttributes["src"]);
+    setAttributeIfValue(element, "srcset", originalAttributes["srcset"]);
+    setAttributeIfValue(element, "sizes", originalAttributes["sizes"]);
 };
 
 const setImageAttributes = (element, settings) => {
-    setAttributeIfValue(element, _sizes_, getData(element, settings.data_sizes));
-    setAttributeIfValue(element, _srcset_, getData(element, settings.data_srcset));
-    setAttributeIfValue(element, _src_, getData(element, settings.data_src));
+    setAttributeIfValue(element, "sizes", getData(element, settings.data_sizes));
+    setAttributeIfValue(element, "srcset", getData(element, settings.data_srcset));
+    setAttributeIfValue(element, "src", getData(element, settings.data_src));
 };
 
 const resetImageAttributes = (element) => {
-    resetAttribute(element, _src_);
-    resetAttribute(element, _srcset_);
-    resetAttribute(element, _sizes_);
+    resetAttribute(element, "src");
+    resetAttribute(element, "srcset");
+    resetAttribute(element, "sizes");
 };
 
 const forEachPictureSource = (element, fn) => {
     const parent = element.parentNode;
-    if (!parent || parent.tagName !== _PICTURE_) {
+    if (!parent || parent.tagName !== "PICTURE") {
         return;
     }
     let sourceTags = getSourceTags(parent);
     sourceTags.forEach(fn);
 };
 
+const forEachVideoSource = (element, fn) => {
+    let sourceTags = getSourceTags(element);
+    sourceTags.forEach(fn);
+};
+
 const restoreOriginalAttributesImg = (element) => {
     forEachPictureSource(element, (sourceTag) => {
         restoreOriginalImageAttributes(sourceTag);
@@ -284,16 +285,15 @@ const resetSourcesImg = (element) => {
 };
 
 const setSourcesIframe = (element, settings) => {
-    setAttributeIfValue(element, _src_, getData(element, settings.data_src));
+    setAttributeIfValue(element, "src", getData(element, settings.data_src));
 };
 
 const setSourcesVideo = (element, settings) => {
-    let sourceTags = getSourceTags(element);
-    sourceTags.forEach((sourceTag) => {
-        setAttributeIfValue(sourceTag, _src_, getData(sourceTag, settings.data_src));
+    forEachVideoSource(element, (sourceTag) => {
+        setAttributeIfValue(sourceTag, "src", getData(sourceTag, settings.data_src));
     });
-    setAttributeIfValue(element, _poster_, getData(element, settings.data_poster));
-    setAttributeIfValue(element, _src_, getData(element, settings.data_src));
+    setAttributeIfValue(element, "poster", getData(element, settings.data_poster));
+    setAttributeIfValue(element, "src", getData(element, settings.data_src));
     element.load();
 };
 
@@ -309,12 +309,8 @@ const setBackground = (element, settings, instance) => {
     const bgDataValue = isHiDpi && bgHiDpiValue ? bgHiDpiValue : bg1xValue;
     if (!bgDataValue) return;
     element.style.backgroundImage = `url("${bgDataValue}")`;
-    getTempImage(element).setAttribute(_src_, bgDataValue);
-    // Annotate and notify loading
-    updateLoadingCount(instance, +1);
-    addClass(element, settings.class_loading);
-    setStatus(element, statusLoading);
-    safeCallback(settings.callback_loading, element, instance);
+    getTempImage(element).setAttribute("src", bgDataValue);
+    manageLoading(element, settings, instance);
 };
 
 // NOTE: THE TEMP IMAGE TRICK CANNOT BE DONE WITH data-multi-bg
@@ -328,32 +324,83 @@ const setMultiBackground = (element, settings, instance) => {
         return;
     }
     element.style.backgroundImage = bgDataValue;
-    // Annotate and notify applied
+    manageApplied(element, settings, instance);
+};
+
+const setSources = (element, settings) => {
+    const setSourcesFunction = setSourcesFunctions[element.tagName];
+    if (!setSourcesFunction) {
+        return;
+    }
+    setSourcesFunction(element, settings);
+};
+
+const manageApplied = (element, settings, instance) => {
     addClass(element, settings.class_applied);
     setStatus(element, statusApplied);
-    safeCallback(settings.callback_applied, element, instance);
+    removeDataMultiBackground(element, settings);
     if (settings.unobserve_completed) {
         // Unobserve now because we can't do it on load
         unobserve(element, settings);
     }
+    safeCallback(settings.callback_applied, element, instance);
 };
 
-const setSources = (element, settings, instance) => {
-    const setSourcesFunction = setSourcesFunctions[element.tagName];
-    if (!setSourcesFunction) {
-        return;
-    }
-    setSourcesFunction(element, settings);
-    // Annotate and notify loading
+const manageLoading = (element, settings, instance) => {
     updateLoadingCount(instance, +1);
     addClass(element, settings.class_loading);
     setStatus(element, statusLoading);
     safeCallback(settings.callback_loading, element, instance);
 };
 
-const genericLoadEventName = "load";
-const mediaLoadEventName = "loadeddata";
-const errorEventName = "error";
+// REMOVE DATA ATTRIBUTES --------------
+
+const removeDataImg = (element, settings) => {
+    setData(element, settings.data_src, null);
+    setData(element, settings.data_srcset, null);
+    setData(element, settings.data_sizes, null);
+    forEachPictureSource(element, (sourceTag) => {
+        setData(sourceTag, settings.data_srcset, null);
+        setData(sourceTag, settings.data_sizes, null);
+    });
+};
+
+const removeDataIframe = (element, settings) => {
+    setData(element, settings.data_src, null);
+};
+
+const removeDataVideo = (element, settings) => {
+    setData(element, settings.data_src, null);
+    setData(element, settings.data_poster, null);
+    forEachVideoSource(element, (sourceTag) => {
+        setData(sourceTag, settings.data_src, null);
+    });
+};
+
+const removeDataFunctions = {
+    IMG: removeDataImg,
+    IFRAME: removeDataIframe,
+    VIDEO: removeDataVideo
+};
+
+const removeDataBackground = (element, settings) => {
+    setData(element, settings.data_bg, null);
+    setData(element, settings.data_bg_hidpi, null);
+};
+
+const removeDataMultiBackground = (element, settings) => {
+    setData(element, settings.data_bg_multi, null);
+    setData(element, settings.data_bg_multi_hidpi, null);
+};
+
+const removeDataAttributes = (element, settings) => {
+    const removeDataFunction = removeDataFunctions[element.tagName];
+    if (removeDataFunction) {
+        removeDataFunction(element, settings);
+        return;
+    }
+    removeDataBackground(element, settings);
+};
 
 const elementsWithLoadEvent = ["IMG", "IFRAME", "VIDEO"];
 const hasLoadEvent = (element) => elementsWithLoadEvent.indexOf(element.tagName) > -1;
@@ -379,11 +426,9 @@ const hasEventListeners = (element) => {
 
 const addEventListeners = (element, loadHandler, errorHandler) => {
     if (!hasEventListeners(element)) element.llEvLisnrs = {};
-    addEventListener(element, genericLoadEventName, loadHandler);
-    addEventListener(element, errorEventName, errorHandler);
-    if (element.tagName === "VIDEO") {
-        addEventListener(element, mediaLoadEventName, loadHandler);
-    }
+    const loadEventName = element.tagName === "VIDEO" ? "loadeddata" : "load";
+    addEventListener(element, loadEventName, loadHandler);
+    addEventListener(element, "error", errorHandler);
 };
 
 const removeEventListeners = (element) => {
@@ -409,19 +454,22 @@ const doneHandler = (element, settings, instance) => {
 };
 
 const loadHandler = (event, element, settings, instance) => {
+    const goingNative = hasStatusNative(element);
     doneHandler(element, settings, instance);
     addClass(element, settings.class_loaded);
     setStatus(element, statusLoaded);
+    removeDataAttributes(element, settings);
     safeCallback(settings.callback_loaded, element, instance);
-    checkFinish(settings, instance);
+    if (!goingNative) checkFinish(settings, instance);
 };
 
 const errorHandler = (event, element, settings, instance) => {
+    const goingNative = hasStatusNative(element);
     doneHandler(element, settings, instance);
     addClass(element, settings.class_error);
     setStatus(element, statusError);
     safeCallback(settings.callback_error, element, instance);
-    checkFinish(settings, instance);
+    if (!goingNative) checkFinish(settings, instance);
 };
 
 const addOneShotEventListeners = (element, settings, instance) => {
@@ -450,7 +498,8 @@ const loadBackground = (element, settings, instance) => {
 
 const loadRegular = (element, settings, instance) => {
     addOneShotEventListeners(element, settings, instance);
-    setSources(element, settings, instance);
+    setSources(element, settings);
+    manageLoading(element, settings, instance);
 };
 
 const load = (element, settings, instance) => {
@@ -459,67 +508,52 @@ const load = (element, settings, instance) => {
     } else {
         loadBackground(element, settings, instance);
     }
-    checkFinish(settings, instance);
 };
 
 const loadNative = (element, settings, instance) => {
     addOneShotEventListeners(element, settings, instance);
-    setSources(element, settings, instance);
+    setSources(element, settings);
+    removeDataAttributes(element, settings);
     setStatus(element, statusNative);
-    checkFinish(settings, instance);
 };
 
-const cancelIfLoading = (element, entry, settings, instance) => {
-	if (element.tagName !== "IMG") {
-		// Can't cancel loading on anything but images
-		return;
-	}
-	removeEventListeners(element);
-	resetSourcesImg(element);
-	restoreOriginalAttributesImg(element);
-	removeClass(element, settings.class_loading);
-	updateLoadingCount(instance, -1);
-	safeCallback(settings.callback_cancel, element, entry, instance);
-	// setTimeout is needed because the "callback_cancel" implementation
-	// could be out of the main thread, e.g. `img.setAttribute("src", "")`
-	setTimeout(() => {
-		resetStatus(element);
-	}, 0);
+const cancelLoadingIfRequired = (element, entry, settings, instance) => {
+    if (!settings.cancel_on_exit) return;
+    if (!hasStatusLoading(element)) return;
+    if (element.tagName !== "IMG") return; //Works only on images
+    removeEventListeners(element);
+    resetSourcesImg(element);
+    restoreOriginalAttributesImg(element);
+    removeClass(element, settings.class_loading);
+    updateLoadingCount(instance, -1);
+    resetStatus(element);
+    safeCallback(settings.callback_cancel, element, entry, instance);
 };
 
 const onEnter = (element, entry, settings, instance) => {
     safeCallback(settings.callback_enter, element, entry, instance);
-    if (hasStatusAfterLoading(element)) {
-        return; //Prevent loading it again
-    }
-    if (settings.unobserve_entered) {
-        unobserve(element, instance);
-    }
+    unobserveIfRequired(element, settings, instance);
+    if (hadStartedLoading(element)) return; //Prevent loading it again
     load(element, settings, instance);
 };
 
 const onExit = (element, entry, settings, instance) => {
-    if (hasEmptyStatus(element)) {
-        return; //Ignore the first pass, at landing
-    }
-    if (settings.cancel_on_exit && hasStatusLoading(element)) {
-        cancelIfLoading(element, entry, settings, instance);
-    }
+    if (hasEmptyStatus(element)) return; //Ignore the first pass, at landing
+    cancelLoadingIfRequired(element, entry, settings, instance);
     safeCallback(settings.callback_exit, element, entry, instance);
 };
 
-const nativeLazyTags = ["IMG", "IFRAME"];
-const loadingString = "loading";
+const tagsWithNativeLazy = ["IMG", "IFRAME"];
 
-const shouldUseNative = settings =>
-    settings.use_native && loadingString in HTMLImageElement.prototype;
+const shouldUseNative = (settings) =>
+    settings.use_native && "loading" in HTMLImageElement.prototype;
 
 const loadAllNative = (elements, settings, instance) => {
-    elements.forEach(element => {
-        if (nativeLazyTags.indexOf(element.tagName) === -1) {
+    elements.forEach((element) => {
+        if (tagsWithNativeLazy.indexOf(element.tagName) === -1) {
             return;
         }
-        element.setAttribute(loadingString, "lazy"); //TODO: Move inside the loadNative method
+        element.setAttribute("loading", "lazy"); //TODO: Move inside the loadNative method
         loadNative(element, settings, instance);
     });
     setToLoadCount(instance, 0);
@@ -623,6 +657,11 @@ LazyLoad.prototype = {
         if (this._observer) {
             this._observer.disconnect();
         }
+        // Clean custom attributes on elements
+        queryElements(this._settings).forEach((element) => {
+            delete element.llOriginalAttrs;
+        });
+        // Delete all internal props
         delete this._observer;
         delete this._settings;
         delete this.loadingCount;
diff --git a/dist/lazyload.esm.min.js b/dist/lazyload.esm.min.js
index 30ac6f49..134151ce 100644
--- a/dist/lazyload.esm.min.js
+++ b/dist/lazyload.esm.min.js
@@ -1 +1 @@
-const e="undefined"!=typeof window,t=e&&!("onscroll"in window)||"undefined"!=typeof navigator&&/(gle|ing|ro)bot|crawl|spider/i.test(navigator.userAgent),a=e&&"IntersectionObserver"in window,s=e&&"classList"in document.createElement("p"),l=e&&window.devicePixelRatio>1,n={elements_selector:"img",container:t||e?document:null,threshold:300,thresholds:null,data_src:"src",data_srcset:"srcset",data_sizes:"sizes",data_bg:"bg",data_bg_hidpi:"bg-hidpi",data_bg_multi:"bg-multi",data_bg_multi_hidpi:"bg-multi-hidpi",data_poster:"poster",class_applied:"applied",class_loading:"loading",class_loaded:"loaded",class_error:"error",unobserve_completed:!0,unobserve_entered:!1,cancel_on_exit:!1,callback_enter:null,callback_exit:null,callback_applied:null,callback_loading:null,callback_loaded:null,callback_error:null,callback_finish:null,callback_cancel:null,use_native:!1},r=e=>Object.assign({},n,e),i=function(e,t){var a;let s=new e(t);try{a=new CustomEvent("LazyLoad::Initialized",{detail:{instance:s}})}catch(e){(a=document.createEvent("CustomEvent")).initCustomEvent("LazyLoad::Initialized",!1,!1,{instance:s})}window.dispatchEvent(a)},o=(e,t)=>e.getAttribute("data-"+t),c=e=>o(e,"ll-status"),d=(e,t)=>((e,t,a)=>{var s="data-"+t;null!==a?e.setAttribute(s,a):e.removeAttribute(s)})(e,"ll-status",t),u=e=>d(e,null),_=e=>null===c(e),g=["loading","applied","loaded","error"],b=(e,t,a,s)=>{e&&(void 0===s?void 0===a?e(t):e(t,a):e(t,a,s))},p=(e,t)=>{s?e.classList.add(t):e.className+=(e.className?" ":"")+t},m=(e,t)=>{s?e.classList.remove(t):e.className=e.className.replace(new RegExp("(^|\\s+)"+t+"(\\s+|$)")," ").replace(/^\s+/,"").replace(/\s+$/,"")},h=e=>e.llTempImage,v=(e,t)=>{if(!t)return;const a=t._observer;a&&a.unobserve(e)},f=(e,t)=>{e&&(e.loadingCount+=t)},E=(e,t)=>{e&&(e.toLoadCount=t)},I=e=>{let t=[];for(let a,s=0;a=e.children[s];s+=1)"SOURCE"===a.tagName&&t.push(a);return t},A=(e,t,a)=>{a&&e.setAttribute(t,a)},L=(e,t)=>{e.removeAttribute(t)},k=e=>!!e.llOriginalAttrs,w=e=>{if(k(e))return;const t={};t.src=e.getAttribute("src"),t.srcset=e.getAttribute("srcset"),t.sizes=e.getAttribute("sizes"),e.llOriginalAttrs=t},y=e=>{if(!k(e))return;const t=e.llOriginalAttrs;A(e,"src",t.src),A(e,"srcset",t.srcset),A(e,"sizes",t.sizes)},z=(e,t)=>{A(e,"sizes",o(e,t.data_sizes)),A(e,"srcset",o(e,t.data_srcset)),A(e,"src",o(e,t.data_src))},O=e=>{L(e,"src"),L(e,"srcset"),L(e,"sizes")},C=(e,t)=>{const a=e.parentNode;if(!a||"PICTURE"!==a.tagName)return;I(a).forEach(t)},N={IMG:(e,t)=>{C(e,e=>{w(e),z(e,t)}),w(e),z(e,t)},IFRAME:(e,t)=>{A(e,"src",o(e,t.data_src))},VIDEO:(e,t)=>{I(e).forEach(e=>{A(e,"src",o(e,t.data_src))}),A(e,"poster",o(e,t.data_poster)),A(e,"src",o(e,t.data_src)),e.load()}},x=(e,t,a)=>{const s=N[e.tagName];s&&(s(e,t),f(a,1),p(e,t.class_loading),d(e,"loading"),b(t.callback_loading,e,a))},M=["IMG","IFRAME","VIDEO"],R=(e,t)=>{!t||(e=>e.loadingCount>0)(t)||(e=>e.toLoadCount>0)(t)||b(e.callback_finish,t)},T=(e,t,a)=>{e.addEventListener(t,a),e.llEvLisnrs[t]=a},G=(e,t,a)=>{e.removeEventListener(t,a)},D=e=>!!e.llEvLisnrs,F=e=>{if(!D(e))return;const t=e.llEvLisnrs;for(let a in t){const s=t[a];G(e,a,s)}delete e.llEvLisnrs},S=(e,t,a)=>{(e=>{delete e.llTempImage})(e),f(a,-1),(e=>{e&&(e.toLoadCount-=1)})(a),m(e,t.class_loading),t.unobserve_completed&&v(e,a)},V=(e,t,a)=>{const s=h(e)||e;if(D(s))return;((e,t,a)=>{D(e)||(e.llEvLisnrs={}),T(e,"load",t),T(e,"error",a),"VIDEO"===e.tagName&&T(e,"loadeddata",t)})(s,l=>{((e,t,a,s)=>{S(t,a,s),p(t,a.class_loaded),d(t,"loaded"),b(a.callback_loaded,t,s),R(a,s)})(0,e,t,a),F(s)},l=>{((e,t,a,s)=>{S(t,a,s),p(t,a.class_error),d(t,"error"),b(a.callback_error,t,s),R(a,s)})(0,e,t,a),F(s)})},$=(e,t,a)=>{(e=>{e.llTempImage=document.createElement("img")})(e),V(e,t,a),((e,t,a)=>{const s=o(e,t.data_bg),n=o(e,t.data_bg_hidpi),r=l&&n?n:s;r&&(e.style.backgroundImage=`url("${r}")`,h(e).setAttribute("src",r),f(a,1),p(e,t.class_loading),d(e,"loading"),b(t.callback_loading,e,a))})(e,t,a),((e,t,a)=>{const s=o(e,t.data_bg_multi),n=o(e,t.data_bg_multi_hidpi),r=l&&n?n:s;r&&(e.style.backgroundImage=r,p(e,t.class_applied),d(e,"applied"),b(t.callback_applied,e,a),t.unobserve_completed&&v(e,t))})(e,t,a)},P=(e,t,a)=>{(e=>M.indexOf(e.tagName)>-1)(e)?((e,t,a)=>{V(e,t,a),x(e,t,a)})(e,t,a):$(e,t,a),R(t,a)},U=(e,t,a,s)=>{"IMG"===e.tagName&&(F(e),(e=>{C(e,e=>{O(e)}),O(e)})(e),(e=>{C(e,e=>{y(e)}),y(e)})(e),m(e,a.class_loading),f(s,-1),b(a.callback_cancel,e,t,s),setTimeout(()=>{u(e)},0))},j=(e,t,a,s)=>{b(a.callback_enter,e,t,s),(e=>g.indexOf(c(e))>-1)(e)||(a.unobserve_entered&&v(e,s),P(e,a,s))},q=(e,t,a,s)=>{_(e)||(a.cancel_on_exit&&(e=>"loading"===c(e))(e)&&U(e,t,a,s),b(a.callback_exit,e,t,s))},H=["IMG","IFRAME"],B=e=>e.use_native&&"loading"in HTMLImageElement.prototype,J=(e,t,a)=>{e.forEach(e=>{-1!==H.indexOf(e.tagName)&&(e.setAttribute("loading","lazy"),((e,t,a)=>{V(e,t,a),x(e,t,a),d(e,"native"),R(t,a)})(e,t,a))}),E(a,0)},K=(e,t)=>{a&&!B(e)&&(t._observer=new IntersectionObserver(a=>{((e,t,a)=>{e.forEach(e=>(e=>e.isIntersecting||e.intersectionRatio>0)(e)?j(e.target,e,t,a):q(e.target,e,t,a))})(a,e,t)},(e=>({root:e.container===document?null:e.container,rootMargin:e.thresholds||e.threshold+"px"}))(e)))},Q=e=>Array.prototype.slice.call(e),W=e=>e.container.querySelectorAll(e.elements_selector),X=e=>(e=>"error"===c(e))(e),Y=(e,t)=>(e=>Q(e).filter(_))(e||W(t)),Z=(e,t)=>{var a;(a=W(e),Q(a).filter(X)).forEach(t=>{m(t,e.class_error),u(t)}),t.update()},ee=function(t,a){const s=r(t);this._settings=s,this.loadingCount=0,K(s,this),((t,a)=>{e&&window.addEventListener("online",()=>{Z(t,a)})})(s,this),this.update(a)};ee.prototype={update:function(e){const s=this._settings,l=Y(e,s);var n,r;(E(this,l.length),!t&&a)?B(s)?J(l,s,this):(n=this._observer,r=l,(e=>{e.disconnect()})(n),((e,t)=>{t.forEach(t=>{e.observe(t)})})(n,r)):this.loadAll(l)},destroy:function(){this._observer&&this._observer.disconnect(),delete this._observer,delete this._settings,delete this.loadingCount,delete this.toLoadCount},loadAll:function(e){const t=this._settings;Y(e,t).forEach(e=>{P(e,t,this)})}},ee.load=(e,t)=>{const a=r(t);P(e,a)},ee.resetStatus=e=>{u(e)},e&&((e,t)=>{if(t)if(t.length)for(let a,s=0;a=t[s];s+=1)i(e,a);else i(e,t)})(ee,window.lazyLoadOptions);export default ee;
+const t="undefined"!=typeof window,e=t&&!("onscroll"in window)||"undefined"!=typeof navigator&&/(gle|ing|ro)bot|crawl|spider/i.test(navigator.userAgent),a=t&&"IntersectionObserver"in window,s=t&&"classList"in document.createElement("p"),l=t&&window.devicePixelRatio>1,n={elements_selector:"IMG",container:e||t?document:null,threshold:300,thresholds:null,data_src:"src",data_srcset:"srcset",data_sizes:"sizes",data_bg:"bg",data_bg_hidpi:"bg-hidpi",data_bg_multi:"bg-multi",data_bg_multi_hidpi:"bg-multi-hidpi",data_poster:"poster",class_applied:"applied",class_loading:"loading",class_loaded:"loaded",class_error:"error",unobserve_completed:!0,unobserve_entered:!1,cancel_on_exit:!1,callback_enter:null,callback_exit:null,callback_applied:null,callback_loading:null,callback_loaded:null,callback_error:null,callback_finish:null,callback_cancel:null,use_native:!1},r=t=>Object.assign({},n,t),i=function(t,e){var a;let s=new t(e);try{a=new CustomEvent("LazyLoad::Initialized",{detail:{instance:s}})}catch(t){(a=document.createEvent("CustomEvent")).initCustomEvent("LazyLoad::Initialized",!1,!1,{instance:s})}window.dispatchEvent(a)},o=(t,e)=>t.getAttribute("data-"+e),c=(t,e,a)=>{var s="data-"+e;null!==a?t.setAttribute(s,a):t.removeAttribute(s)},d=t=>o(t,"ll-status"),_=(t,e)=>c(t,"ll-status",e),u=t=>_(t,null),g=t=>null===d(t),b=t=>"native"===d(t),p=(t,e,a,s)=>{t&&(void 0===s?void 0===a?t(e):t(e,a):t(e,a,s))},h=(t,e)=>{s?t.classList.add(e):t.className+=(t.className?" ":"")+e},m=(t,e)=>{s?t.classList.remove(e):t.className=t.className.replace(new RegExp("(^|\\s+)"+e+"(\\s+|$)")," ").replace(/^\s+/,"").replace(/\s+$/,"")},v=t=>t.llTempImage,E=(t,e)=>{if(!e)return;const a=e._observer;a&&a.unobserve(t)},f=(t,e)=>{t&&(t.loadingCount+=e)},I=(t,e)=>{t&&(t.toLoadCount=e)},A=t=>{let e=[];for(let a,s=0;a=t.children[s];s+=1)"SOURCE"===a.tagName&&e.push(a);return e},L=(t,e,a)=>{a&&t.setAttribute(e,a)},w=(t,e)=>{t.removeAttribute(e)},k=t=>!!t.llOriginalAttrs,z=t=>{if(k(t))return;const e={};e.src=t.getAttribute("src"),e.srcset=t.getAttribute("srcset"),e.sizes=t.getAttribute("sizes"),t.llOriginalAttrs=e},y=t=>{if(!k(t))return;const e=t.llOriginalAttrs;L(t,"src",e.src),L(t,"srcset",e.srcset),L(t,"sizes",e.sizes)},O=(t,e)=>{L(t,"sizes",o(t,e.data_sizes)),L(t,"srcset",o(t,e.data_srcset)),L(t,"src",o(t,e.data_src))},C=t=>{w(t,"src"),w(t,"srcset"),w(t,"sizes")},M=(t,e)=>{const a=t.parentNode;a&&"PICTURE"===a.tagName&&A(a).forEach(e)},N=(t,e)=>{A(t).forEach(e)},x={IMG:(t,e)=>{M(t,t=>{z(t),O(t,e)}),z(t),O(t,e)},IFRAME:(t,e)=>{L(t,"src",o(t,e.data_src))},VIDEO:(t,e)=>{N(t,t=>{L(t,"src",o(t,e.data_src))}),L(t,"poster",o(t,e.data_poster)),L(t,"src",o(t,e.data_src)),t.load()}},R=(t,e)=>{const a=x[t.tagName];a&&a(t,e)},G=(t,e,a)=>{f(a,1),h(t,e.class_loading),_(t,"loading"),p(e.callback_loading,t,a)},T={IMG:(t,e)=>{c(t,e.data_src,null),c(t,e.data_srcset,null),c(t,e.data_sizes,null),M(t,t=>{c(t,e.data_srcset,null),c(t,e.data_sizes,null)})},IFRAME:(t,e)=>{c(t,e.data_src,null)},VIDEO:(t,e)=>{c(t,e.data_src,null),c(t,e.data_poster,null),N(t,t=>{c(t,e.data_src,null)})}},D=(t,e)=>{c(t,e.data_bg_multi,null),c(t,e.data_bg_multi_hidpi,null)},F=(t,e)=>{const a=T[t.tagName];a?a(t,e):((t,e)=>{c(t,e.data_bg,null),c(t,e.data_bg_hidpi,null)})(t,e)},V=["IMG","IFRAME","VIDEO"],S=(t,e)=>{!e||(t=>t.loadingCount>0)(e)||(t=>t.toLoadCount>0)(e)||p(t.callback_finish,e)},$=(t,e,a)=>{t.addEventListener(e,a),t.llEvLisnrs[e]=a},P=(t,e,a)=>{t.removeEventListener(e,a)},U=t=>!!t.llEvLisnrs,j=t=>{if(!U(t))return;const e=t.llEvLisnrs;for(let a in e){const s=e[a];P(t,a,s)}delete t.llEvLisnrs},q=(t,e,a)=>{(t=>{delete t.llTempImage})(t),f(a,-1),(t=>{t&&(t.toLoadCount-=1)})(a),m(t,e.class_loading),e.unobserve_completed&&E(t,a)},H=(t,e,a)=>{const s=v(t)||t;U(s)||((t,e,a)=>{U(t)||(t.llEvLisnrs={});const s="VIDEO"===t.tagName?"loadeddata":"load";$(t,s,e),$(t,"error",a)})(s,l=>{((t,e,a,s)=>{const l=b(e);q(e,a,s),h(e,a.class_loaded),_(e,"loaded"),F(e,a),p(a.callback_loaded,e,s),l||S(a,s)})(0,t,e,a),j(s)},l=>{((t,e,a,s)=>{const l=b(e);q(e,a,s),h(e,a.class_error),_(e,"error"),p(a.callback_error,e,s),l||S(a,s)})(0,t,e,a),j(s)})},B=(t,e,a)=>{(t=>{t.llTempImage=document.createElement("IMG")})(t),H(t,e,a),((t,e,a)=>{const s=o(t,e.data_bg),n=o(t,e.data_bg_hidpi),r=l&&n?n:s;r&&(t.style.backgroundImage=`url("${r}")`,v(t).setAttribute("src",r),G(t,e,a))})(t,e,a),((t,e,a)=>{const s=o(t,e.data_bg_multi),n=o(t,e.data_bg_multi_hidpi),r=l&&n?n:s;r&&(t.style.backgroundImage=r,((t,e,a)=>{h(t,e.class_applied),_(t,"applied"),D(t,e),e.unobserve_completed&&E(t,e),p(e.callback_applied,t,a)})(t,e,a))})(t,e,a)},J=(t,e,a)=>{(t=>V.indexOf(t.tagName)>-1)(t)?((t,e,a)=>{H(t,e,a),R(t,e),G(t,e,a)})(t,e,a):B(t,e,a)},K=["IMG","IFRAME"],Q=t=>t.use_native&&"loading"in HTMLImageElement.prototype,W=(t,e,a)=>{t.forEach(t=>(t=>t.isIntersecting||t.intersectionRatio>0)(t)?((t,e,a,s)=>{p(a.callback_enter,t,e,s),((t,e,a)=>{e.unobserve_entered&&E(t,a)})(t,a,s),(t=>!g(t))(t)||J(t,a,s)})(t.target,t,e,a):((t,e,a,s)=>{g(t)||(((t,e,a,s)=>{a.cancel_on_exit&&(t=>"loading"===d(t))(t)&&"IMG"===t.tagName&&(j(t),(t=>{M(t,t=>{C(t)}),C(t)})(t),(t=>{M(t,t=>{y(t)}),y(t)})(t),m(t,a.class_loading),f(s,-1),u(t),p(a.callback_cancel,t,e,s))})(t,e,a,s),p(a.callback_exit,t,e,s))})(t.target,t,e,a))},X=t=>Array.prototype.slice.call(t),Y=t=>t.container.querySelectorAll(t.elements_selector),Z=t=>(t=>"error"===d(t))(t),tt=(t,e)=>(t=>X(t).filter(g))(t||Y(e)),et=function(e,s){const l=r(e);this._settings=l,this.loadingCount=0,((t,e)=>{a&&!Q(t)&&(e._observer=new IntersectionObserver(a=>{W(a,t,e)},(t=>({root:t.container===document?null:t.container,rootMargin:t.thresholds||t.threshold+"px"}))(t)))})(l,this),((e,a)=>{t&&window.addEventListener("online",()=>{((t,e)=>{var a;(a=Y(t),X(a).filter(Z)).forEach(e=>{m(e,t.class_error),u(e)}),e.update()})(e,a)})})(l,this),this.update(s)};et.prototype={update:function(t){const s=this._settings,l=tt(t,s);var n,r;I(this,l.length),!e&&a?Q(s)?((t,e,a)=>{t.forEach(t=>{-1!==K.indexOf(t.tagName)&&(t.setAttribute("loading","lazy"),((t,e,a)=>{H(t,e,a),R(t,e),F(t,e),_(t,"native")})(t,e,a))}),I(a,0)})(l,s,this):(r=l,(t=>{t.disconnect()})(n=this._observer),((t,e)=>{e.forEach(e=>{t.observe(e)})})(n,r)):this.loadAll(l)},destroy:function(){this._observer&&this._observer.disconnect(),Y(this._settings).forEach(t=>{delete t.llOriginalAttrs}),delete this._observer,delete this._settings,delete this.loadingCount,delete this.toLoadCount},loadAll:function(t){const e=this._settings;tt(t,e).forEach(t=>{J(t,e,this)})}},et.load=(t,e)=>{const a=r(e);J(t,a)},et.resetStatus=t=>{u(t)},t&&((t,e)=>{if(e)if(e.length)for(let a,s=0;a=e[s];s+=1)i(t,a);else i(t,e)})(et,window.lazyLoadOptions);export default et;
diff --git a/dist/lazyload.iife.js b/dist/lazyload.iife.js
index 157d269e..e30e6c92 100644
--- a/dist/lazyload.iife.js
+++ b/dist/lazyload.iife.js
@@ -26,7 +26,7 @@ var LazyLoad = (function () {
   var isHiDpi = runningOnBrowser && window.devicePixelRatio > 1;
 
   var defaultSettings = {
-    elements_selector: "img",
+    elements_selector: "IMG",
     container: isBot || runningOnBrowser ? document : null,
     threshold: 300,
     thresholds: null,
@@ -141,9 +141,11 @@ var LazyLoad = (function () {
   var hasStatusError = function hasStatusError(element) {
     return getStatus(element) === statusError;
   };
-  var statusesAfterLoading = [statusLoading, statusApplied, statusLoaded, statusError];
-  var hasStatusAfterLoading = function hasStatusAfterLoading(element) {
-    return statusesAfterLoading.indexOf(getStatus(element)) > -1;
+  var hasStatusNative = function hasStatusNative(element) {
+    return getStatus(element) === statusNative;
+  };
+  var hadStartedLoading = function hadStartedLoading(element) {
+    return !hasEmptyStatus(element);
   };
 
   var safeCallback = function safeCallback(callback, arg1, arg2, arg3) {
@@ -182,7 +184,7 @@ var LazyLoad = (function () {
   };
 
   var addTempImage = function addTempImage(element) {
-    element.llTempImage = document.createElement("img");
+    element.llTempImage = document.createElement("IMG");
   };
   var deleteTempImage = function deleteTempImage(element) {
     delete element.llTempImage;
@@ -200,6 +202,9 @@ var LazyLoad = (function () {
   var resetObserver = function resetObserver(observer) {
     observer.disconnect();
   };
+  var unobserveIfRequired = function unobserveIfRequired(element, settings, instance) {
+    if (settings.unobserve_entered) unobserve(element, instance);
+  };
 
   var updateLoadingCount = function updateLoadingCount(instance, delta) {
     if (!instance) return;
@@ -220,11 +225,6 @@ var LazyLoad = (function () {
     return instance.toLoadCount > 0;
   };
 
-  var _src_ = "src";
-  var _srcset_ = "srcset";
-  var _sizes_ = "sizes";
-  var _poster_ = "poster";
-  var _PICTURE_ = "PICTURE";
   var getSourceTags = function getSourceTags(parentTag) {
     var sourceTags = [];
 
@@ -255,9 +255,9 @@ var LazyLoad = (function () {
     }
 
     var originalAttributes = {};
-    originalAttributes[_src_] = element.getAttribute(_src_);
-    originalAttributes[_srcset_] = element.getAttribute(_srcset_);
-    originalAttributes[_sizes_] = element.getAttribute(_sizes_);
+    originalAttributes["src"] = element.getAttribute("src");
+    originalAttributes["srcset"] = element.getAttribute("srcset");
+    originalAttributes["sizes"] = element.getAttribute("sizes");
     element.llOriginalAttrs = originalAttributes;
   };
   var restoreOriginalImageAttributes = function restoreOriginalImageAttributes(element) {
@@ -266,30 +266,34 @@ var LazyLoad = (function () {
     }
 
     var originalAttributes = element.llOriginalAttrs;
-    setAttributeIfValue(element, _src_, originalAttributes[_src_]);
-    setAttributeIfValue(element, _srcset_, originalAttributes[_srcset_]);
-    setAttributeIfValue(element, _sizes_, originalAttributes[_sizes_]);
+    setAttributeIfValue(element, "src", originalAttributes["src"]);
+    setAttributeIfValue(element, "srcset", originalAttributes["srcset"]);
+    setAttributeIfValue(element, "sizes", originalAttributes["sizes"]);
   };
   var setImageAttributes = function setImageAttributes(element, settings) {
-    setAttributeIfValue(element, _sizes_, getData(element, settings.data_sizes));
-    setAttributeIfValue(element, _srcset_, getData(element, settings.data_srcset));
-    setAttributeIfValue(element, _src_, getData(element, settings.data_src));
+    setAttributeIfValue(element, "sizes", getData(element, settings.data_sizes));
+    setAttributeIfValue(element, "srcset", getData(element, settings.data_srcset));
+    setAttributeIfValue(element, "src", getData(element, settings.data_src));
   };
   var resetImageAttributes = function resetImageAttributes(element) {
-    resetAttribute(element, _src_);
-    resetAttribute(element, _srcset_);
-    resetAttribute(element, _sizes_);
+    resetAttribute(element, "src");
+    resetAttribute(element, "srcset");
+    resetAttribute(element, "sizes");
   };
   var forEachPictureSource = function forEachPictureSource(element, fn) {
     var parent = element.parentNode;
 
-    if (!parent || parent.tagName !== _PICTURE_) {
+    if (!parent || parent.tagName !== "PICTURE") {
       return;
     }
 
     var sourceTags = getSourceTags(parent);
     sourceTags.forEach(fn);
   };
+  var forEachVideoSource = function forEachVideoSource(element, fn) {
+    var sourceTags = getSourceTags(element);
+    sourceTags.forEach(fn);
+  };
   var restoreOriginalAttributesImg = function restoreOriginalAttributesImg(element) {
     forEachPictureSource(element, function (sourceTag) {
       restoreOriginalImageAttributes(sourceTag);
@@ -311,15 +315,14 @@ var LazyLoad = (function () {
     resetImageAttributes(element);
   };
   var setSourcesIframe = function setSourcesIframe(element, settings) {
-    setAttributeIfValue(element, _src_, getData(element, settings.data_src));
+    setAttributeIfValue(element, "src", getData(element, settings.data_src));
   };
   var setSourcesVideo = function setSourcesVideo(element, settings) {
-    var sourceTags = getSourceTags(element);
-    sourceTags.forEach(function (sourceTag) {
-      setAttributeIfValue(sourceTag, _src_, getData(sourceTag, settings.data_src));
+    forEachVideoSource(element, function (sourceTag) {
+      setAttributeIfValue(sourceTag, "src", getData(sourceTag, settings.data_src));
     });
-    setAttributeIfValue(element, _poster_, getData(element, settings.data_poster));
-    setAttributeIfValue(element, _src_, getData(element, settings.data_src));
+    setAttributeIfValue(element, "poster", getData(element, settings.data_poster));
+    setAttributeIfValue(element, "src", getData(element, settings.data_src));
     element.load();
   };
   var setSourcesFunctions = {
@@ -333,12 +336,8 @@ var LazyLoad = (function () {
     var bgDataValue = isHiDpi && bgHiDpiValue ? bgHiDpiValue : bg1xValue;
     if (!bgDataValue) return;
     element.style.backgroundImage = "url(\"".concat(bgDataValue, "\")");
-    getTempImage(element).setAttribute(_src_, bgDataValue); // Annotate and notify loading
-
-    updateLoadingCount(instance, +1);
-    addClass(element, settings.class_loading);
-    setStatus(element, statusLoading);
-    safeCallback(settings.callback_loading, element, instance);
+    getTempImage(element).setAttribute("src", bgDataValue);
+    manageLoading(element, settings, instance);
   }; // NOTE: THE TEMP IMAGE TRICK CANNOT BE DONE WITH data-multi-bg
   // BECAUSE INSIDE ITS VALUES MUST BE WRAPPED WITH URL() AND ONE OF THEM
   // COULD BE A GRADIENT BACKGROUND IMAGE
@@ -352,35 +351,80 @@ var LazyLoad = (function () {
       return;
     }
 
-    element.style.backgroundImage = bgDataValue; // Annotate and notify applied
+    element.style.backgroundImage = bgDataValue;
+    manageApplied(element, settings, instance);
+  };
+  var setSources = function setSources(element, settings) {
+    var setSourcesFunction = setSourcesFunctions[element.tagName];
 
+    if (!setSourcesFunction) {
+      return;
+    }
+
+    setSourcesFunction(element, settings);
+  };
+  var manageApplied = function manageApplied(element, settings, instance) {
     addClass(element, settings.class_applied);
     setStatus(element, statusApplied);
-    safeCallback(settings.callback_applied, element, instance);
+    removeDataMultiBackground(element, settings);
 
     if (settings.unobserve_completed) {
       // Unobserve now because we can't do it on load
       unobserve(element, settings);
     }
-  };
-  var setSources = function setSources(element, settings, instance) {
-    var setSourcesFunction = setSourcesFunctions[element.tagName];
-
-    if (!setSourcesFunction) {
-      return;
-    }
-
-    setSourcesFunction(element, settings); // Annotate and notify loading
 
+    safeCallback(settings.callback_applied, element, instance);
+  };
+  var manageLoading = function manageLoading(element, settings, instance) {
     updateLoadingCount(instance, +1);
     addClass(element, settings.class_loading);
     setStatus(element, statusLoading);
     safeCallback(settings.callback_loading, element, instance);
+  }; // REMOVE DATA ATTRIBUTES --------------
+
+  var removeDataImg = function removeDataImg(element, settings) {
+    setData(element, settings.data_src, null);
+    setData(element, settings.data_srcset, null);
+    setData(element, settings.data_sizes, null);
+    forEachPictureSource(element, function (sourceTag) {
+      setData(sourceTag, settings.data_srcset, null);
+      setData(sourceTag, settings.data_sizes, null);
+    });
+  };
+  var removeDataIframe = function removeDataIframe(element, settings) {
+    setData(element, settings.data_src, null);
+  };
+  var removeDataVideo = function removeDataVideo(element, settings) {
+    setData(element, settings.data_src, null);
+    setData(element, settings.data_poster, null);
+    forEachVideoSource(element, function (sourceTag) {
+      setData(sourceTag, settings.data_src, null);
+    });
+  };
+  var removeDataFunctions = {
+    IMG: removeDataImg,
+    IFRAME: removeDataIframe,
+    VIDEO: removeDataVideo
+  };
+  var removeDataBackground = function removeDataBackground(element, settings) {
+    setData(element, settings.data_bg, null);
+    setData(element, settings.data_bg_hidpi, null);
+  };
+  var removeDataMultiBackground = function removeDataMultiBackground(element, settings) {
+    setData(element, settings.data_bg_multi, null);
+    setData(element, settings.data_bg_multi_hidpi, null);
+  };
+  var removeDataAttributes = function removeDataAttributes(element, settings) {
+    var removeDataFunction = removeDataFunctions[element.tagName];
+
+    if (removeDataFunction) {
+      removeDataFunction(element, settings);
+      return;
+    }
+
+    removeDataBackground(element, settings);
   };
 
-  var genericLoadEventName = "load";
-  var mediaLoadEventName = "loadeddata";
-  var errorEventName = "error";
   var elementsWithLoadEvent = ["IMG", "IFRAME", "VIDEO"];
   var hasLoadEvent = function hasLoadEvent(element) {
     return elementsWithLoadEvent.indexOf(element.tagName) > -1;
@@ -402,12 +446,9 @@ var LazyLoad = (function () {
   };
   var addEventListeners = function addEventListeners(element, loadHandler, errorHandler) {
     if (!hasEventListeners(element)) element.llEvLisnrs = {};
-    addEventListener(element, genericLoadEventName, loadHandler);
-    addEventListener(element, errorEventName, errorHandler);
-
-    if (element.tagName === "VIDEO") {
-      addEventListener(element, mediaLoadEventName, loadHandler);
-    }
+    var loadEventName = element.tagName === "VIDEO" ? "loadeddata" : "load";
+    addEventListener(element, loadEventName, loadHandler);
+    addEventListener(element, "error", errorHandler);
   };
   var removeEventListeners = function removeEventListeners(element) {
     if (!hasEventListeners(element)) {
@@ -434,18 +475,21 @@ var LazyLoad = (function () {
     }
   };
   var loadHandler = function loadHandler(event, element, settings, instance) {
+    var goingNative = hasStatusNative(element);
     doneHandler(element, settings, instance);
     addClass(element, settings.class_loaded);
     setStatus(element, statusLoaded);
+    removeDataAttributes(element, settings);
     safeCallback(settings.callback_loaded, element, instance);
-    checkFinish(settings, instance);
+    if (!goingNative) checkFinish(settings, instance);
   };
   var errorHandler = function errorHandler(event, element, settings, instance) {
+    var goingNative = hasStatusNative(element);
     doneHandler(element, settings, instance);
     addClass(element, settings.class_error);
     setStatus(element, statusError);
     safeCallback(settings.callback_error, element, instance);
-    checkFinish(settings, instance);
+    if (!goingNative) checkFinish(settings, instance);
   };
   var addOneShotEventListeners = function addOneShotEventListeners(element, settings, instance) {
     var elementToListenTo = getTempImage(element) || element;
@@ -477,7 +521,8 @@ var LazyLoad = (function () {
 
   var loadRegular = function loadRegular(element, settings, instance) {
     addOneShotEventListeners(element, settings, instance);
-    setSources(element, settings, instance);
+    setSources(element, settings);
+    manageLoading(element, settings, instance);
   };
 
   var load = function load(element, settings, instance) {
@@ -486,72 +531,53 @@ var LazyLoad = (function () {
     } else {
       loadBackground(element, settings, instance);
     }
-
-    checkFinish(settings, instance);
   };
   var loadNative = function loadNative(element, settings, instance) {
     addOneShotEventListeners(element, settings, instance);
-    setSources(element, settings, instance);
+    setSources(element, settings);
+    removeDataAttributes(element, settings);
     setStatus(element, statusNative);
-    checkFinish(settings, instance);
   };
 
-  var cancelIfLoading = function cancelIfLoading(element, entry, settings, instance) {
-    if (element.tagName !== "IMG") {
-      // Can't cancel loading on anything but images
-      return;
-    }
+  var cancelLoadingIfRequired = function cancelLoadingIfRequired(element, entry, settings, instance) {
+    if (!settings.cancel_on_exit) return;
+    if (!hasStatusLoading(element)) return;
+    if (element.tagName !== "IMG") return; //Works only on images
 
     removeEventListeners(element);
     resetSourcesImg(element);
     restoreOriginalAttributesImg(element);
     removeClass(element, settings.class_loading);
     updateLoadingCount(instance, -1);
-    safeCallback(settings.callback_cancel, element, entry, instance); // setTimeout is needed because the "callback_cancel" implementation
-    // could be out of the main thread, e.g. `img.setAttribute("src", "")`
-
-    setTimeout(function () {
-      resetStatus(element);
-    }, 0);
+    resetStatus(element);
+    safeCallback(settings.callback_cancel, element, entry, instance);
   };
 
   var onEnter = function onEnter(element, entry, settings, instance) {
     safeCallback(settings.callback_enter, element, entry, instance);
-
-    if (hasStatusAfterLoading(element)) {
-      return; //Prevent loading it again
-    }
-
-    if (settings.unobserve_entered) {
-      unobserve(element, instance);
-    }
+    unobserveIfRequired(element, settings, instance);
+    if (hadStartedLoading(element)) return; //Prevent loading it again
 
     load(element, settings, instance);
   };
   var onExit = function onExit(element, entry, settings, instance) {
-    if (hasEmptyStatus(element)) {
-      return; //Ignore the first pass, at landing
-    }
-
-    if (settings.cancel_on_exit && hasStatusLoading(element)) {
-      cancelIfLoading(element, entry, settings, instance);
-    }
+    if (hasEmptyStatus(element)) return; //Ignore the first pass, at landing
 
+    cancelLoadingIfRequired(element, entry, settings, instance);
     safeCallback(settings.callback_exit, element, entry, instance);
   };
 
-  var nativeLazyTags = ["IMG", "IFRAME"];
-  var loadingString = "loading";
+  var tagsWithNativeLazy = ["IMG", "IFRAME"];
   var shouldUseNative = function shouldUseNative(settings) {
-    return settings.use_native && loadingString in HTMLImageElement.prototype;
+    return settings.use_native && "loading" in HTMLImageElement.prototype;
   };
   var loadAllNative = function loadAllNative(elements, settings, instance) {
     elements.forEach(function (element) {
-      if (nativeLazyTags.indexOf(element.tagName) === -1) {
+      if (tagsWithNativeLazy.indexOf(element.tagName) === -1) {
         return;
       }
 
-      element.setAttribute(loadingString, "lazy"); //TODO: Move inside the loadNative method
+      element.setAttribute("loading", "lazy"); //TODO: Move inside the loadNative method
 
       loadNative(element, settings, instance);
     });
@@ -662,7 +688,12 @@ var LazyLoad = (function () {
       // Observer
       if (this._observer) {
         this._observer.disconnect();
-      }
+      } // Clean custom attributes on elements
+
+
+      queryElements(this._settings).forEach(function (element) {
+        delete element.llOriginalAttrs;
+      }); // Delete all internal props
 
       delete this._observer;
       delete this._settings;
diff --git a/dist/lazyload.iife.min.js b/dist/lazyload.iife.min.js
index d43e1279..285fcaec 100644
--- a/dist/lazyload.iife.min.js
+++ b/dist/lazyload.iife.min.js
@@ -1 +1 @@
-var LazyLoad=function(){"use strict";function t(){return(t=Object.assign||function(t){for(var n=1;n<arguments.length;n++){var e=arguments[n];for(var i in e)Object.prototype.hasOwnProperty.call(e,i)&&(t[i]=e[i])}return t}).apply(this,arguments)}var n="undefined"!=typeof window,e=n&&!("onscroll"in window)||"undefined"!=typeof navigator&&/(gle|ing|ro)bot|crawl|spider/i.test(navigator.userAgent),i=n&&"IntersectionObserver"in window,a=n&&"classList"in document.createElement("p"),o=n&&window.devicePixelRatio>1,r={elements_selector:"img",container:e||n?document:null,threshold:300,thresholds:null,data_src:"src",data_srcset:"srcset",data_sizes:"sizes",data_bg:"bg",data_bg_hidpi:"bg-hidpi",data_bg_multi:"bg-multi",data_bg_multi_hidpi:"bg-multi-hidpi",data_poster:"poster",class_applied:"applied",class_loading:"loading",class_loaded:"loaded",class_error:"error",unobserve_completed:!0,unobserve_entered:!1,cancel_on_exit:!1,callback_enter:null,callback_exit:null,callback_applied:null,callback_loading:null,callback_loaded:null,callback_error:null,callback_finish:null,callback_cancel:null,use_native:!1},c=function(n){return t({},r,n)},l=function(t,n){var e,i=new t(n);try{e=new CustomEvent("LazyLoad::Initialized",{detail:{instance:i}})}catch(t){(e=document.createEvent("CustomEvent")).initCustomEvent("LazyLoad::Initialized",!1,!1,{instance:i})}window.dispatchEvent(e)},s=function(t,n){return t.getAttribute("data-"+n)},u=function(t){return s(t,"ll-status")},d=function(t,n){return function(t,n,e){var i="data-"+n;null!==e?t.setAttribute(i,e):t.removeAttribute(i)}(t,"ll-status",n)},f=function(t){return d(t,null)},_=function(t){return null===u(t)},g=["loading","applied","loaded","error"],v=function(t,n,e,i){t&&(void 0===i?void 0===e?t(n):t(n,e):t(n,e,i))},b=function(t,n){a?t.classList.add(n):t.className+=(t.className?" ":"")+n},p=function(t,n){a?t.classList.remove(n):t.className=t.className.replace(new RegExp("(^|\\s+)"+n+"(\\s+|$)")," ").replace(/^\s+/,"").replace(/\s+$/,"")},h=function(t){return t.llTempImage},m=function(t,n){if(n){var e=n._observer;e&&e.unobserve(t)}},E=function(t,n){t&&(t.loadingCount+=n)},L=function(t,n){t&&(t.toLoadCount=n)},I=function(t){for(var n,e=[],i=0;n=t.children[i];i+=1)"SOURCE"===n.tagName&&e.push(n);return e},A=function(t,n,e){e&&t.setAttribute(n,e)},w=function(t,n){t.removeAttribute(n)},k=function(t){return!!t.llOriginalAttrs},y=function(t){if(!k(t)){var n={};n.src=t.getAttribute("src"),n.srcset=t.getAttribute("srcset"),n.sizes=t.getAttribute("sizes"),t.llOriginalAttrs=n}},z=function(t){if(k(t)){var n=t.llOriginalAttrs;A(t,"src",n.src),A(t,"srcset",n.srcset),A(t,"sizes",n.sizes)}},O=function(t,n){A(t,"sizes",s(t,n.data_sizes)),A(t,"srcset",s(t,n.data_srcset)),A(t,"src",s(t,n.data_src))},C=function(t){w(t,"src"),w(t,"srcset"),w(t,"sizes")},N=function(t,n){var e=t.parentNode;e&&"PICTURE"===e.tagName&&I(e).forEach(n)},x={IMG:function(t,n){N(t,(function(t){y(t),O(t,n)})),y(t),O(t,n)},IFRAME:function(t,n){A(t,"src",s(t,n.data_src))},VIDEO:function(t,n){I(t).forEach((function(t){A(t,"src",s(t,n.data_src))})),A(t,"poster",s(t,n.data_poster)),A(t,"src",s(t,n.data_src)),t.load()}},M=function(t,n,e){var i=x[t.tagName];i&&(i(t,n),E(e,1),b(t,n.class_loading),d(t,"loading"),v(n.callback_loading,t,e))},R=["IMG","IFRAME","VIDEO"],T=function(t,n){!n||function(t){return t.loadingCount>0}(n)||function(t){return t.toLoadCount>0}(n)||v(t.callback_finish,n)},G=function(t,n,e){t.addEventListener(n,e),t.llEvLisnrs[n]=e},D=function(t,n,e){t.removeEventListener(n,e)},F=function(t){return!!t.llEvLisnrs},P=function(t){if(F(t)){var n=t.llEvLisnrs;for(var e in n){var i=n[e];D(t,e,i)}delete t.llEvLisnrs}},S=function(t,n,e){!function(t){delete t.llTempImage}(t),E(e,-1),function(t){t&&(t.toLoadCount-=1)}(e),p(t,n.class_loading),n.unobserve_completed&&m(t,e)},V=function(t,n,e){var i=h(t)||t;if(!F(i)){!function(t,n,e){F(t)||(t.llEvLisnrs={}),G(t,"load",n),G(t,"error",e),"VIDEO"===t.tagName&&G(t,"loadeddata",n)}(i,(function(a){!function(t,n,e,i){S(n,e,i),b(n,e.class_loaded),d(n,"loaded"),v(e.callback_loaded,n,i),T(e,i)}(0,t,n,e),P(i)}),(function(a){!function(t,n,e,i){S(n,e,i),b(n,e.class_error),d(n,"error"),v(e.callback_error,n,i),T(e,i)}(0,t,n,e),P(i)}))}},j=function(t,n,e){!function(t){t.llTempImage=document.createElement("img")}(t),V(t,n,e),function(t,n,e){var i=s(t,n.data_bg),a=s(t,n.data_bg_hidpi),r=o&&a?a:i;r&&(t.style.backgroundImage='url("'.concat(r,'")'),h(t).setAttribute("src",r),E(e,1),b(t,n.class_loading),d(t,"loading"),v(n.callback_loading,t,e))}(t,n,e),function(t,n,e){var i=s(t,n.data_bg_multi),a=s(t,n.data_bg_multi_hidpi),r=o&&a?a:i;r&&(t.style.backgroundImage=r,b(t,n.class_applied),d(t,"applied"),v(n.callback_applied,t,e),n.unobserve_completed&&m(t,n))}(t,n,e)},U=function(t,n,e){!function(t){return R.indexOf(t.tagName)>-1}(t)?j(t,n,e):function(t,n,e){V(t,n,e),M(t,n,e)}(t,n,e),T(n,e)},$=function(t,n,e,i){"IMG"===t.tagName&&(P(t),function(t){N(t,(function(t){C(t)})),C(t)}(t),function(t){N(t,(function(t){z(t)})),z(t)}(t),p(t,e.class_loading),E(i,-1),v(e.callback_cancel,t,n,i),setTimeout((function(){f(t)}),0))},q=function(t,n,e,i){v(e.callback_enter,t,n,i),function(t){return g.indexOf(u(t))>-1}(t)||(e.unobserve_entered&&m(t,i),U(t,e,i))},H=function(t,n,e,i){_(t)||(e.cancel_on_exit&&function(t){return"loading"===u(t)}(t)&&$(t,n,e,i),v(e.callback_exit,t,n,i))},B=["IMG","IFRAME"],J=function(t){return t.use_native&&"loading"in HTMLImageElement.prototype},K=function(t,n,e){t.forEach((function(t){-1!==B.indexOf(t.tagName)&&(t.setAttribute("loading","lazy"),function(t,n,e){V(t,n,e),M(t,n,e),d(t,"native"),T(n,e)}(t,n,e))})),L(e,0)},Q=function(t,n){i&&!J(t)&&(n._observer=new IntersectionObserver((function(e){!function(t,n,e){t.forEach((function(t){return function(t){return t.isIntersecting||t.intersectionRatio>0}(t)?q(t.target,t,n,e):H(t.target,t,n,e)}))}(e,t,n)}),function(t){return{root:t.container===document?null:t.container,rootMargin:t.thresholds||t.threshold+"px"}}(t)))},W=function(t){return Array.prototype.slice.call(t)},X=function(t){return t.container.querySelectorAll(t.elements_selector)},Y=function(t){return function(t){return"error"===u(t)}(t)},Z=function(t,n){return function(t){return W(t).filter(_)}(t||X(n))},tt=function(t,n){var e;(e=X(t),W(e).filter(Y)).forEach((function(n){p(n,t.class_error),f(n)})),n.update()},nt=function(t,e){var i=c(t);this._settings=i,this.loadingCount=0,Q(i,this),function(t,e){n&&window.addEventListener("online",(function(){tt(t,e)}))}(i,this),this.update(e)};return nt.prototype={update:function(t){var n,a,o=this._settings,r=Z(t,o);(L(this,r.length),!e&&i)?J(o)?K(r,o,this):(n=this._observer,a=r,function(t){t.disconnect()}(n),function(t,n){n.forEach((function(n){t.observe(n)}))}(n,a)):this.loadAll(r)},destroy:function(){this._observer&&this._observer.disconnect(),delete this._observer,delete this._settings,delete this.loadingCount,delete this.toLoadCount},loadAll:function(t){var n=this,e=this._settings;Z(t,e).forEach((function(t){U(t,e,n)}))}},nt.load=function(t,n){var e=c(n);U(t,e)},nt.resetStatus=function(t){f(t)},n&&function(t,n){if(n)if(n.length)for(var e,i=0;e=n[i];i+=1)l(t,e);else l(t,n)}(nt,window.lazyLoadOptions),nt}();
+var LazyLoad=function(){"use strict";function t(){return(t=Object.assign||function(t){for(var n=1;n<arguments.length;n++){var e=arguments[n];for(var i in e)Object.prototype.hasOwnProperty.call(e,i)&&(t[i]=e[i])}return t}).apply(this,arguments)}var n="undefined"!=typeof window,e=n&&!("onscroll"in window)||"undefined"!=typeof navigator&&/(gle|ing|ro)bot|crawl|spider/i.test(navigator.userAgent),i=n&&"IntersectionObserver"in window,a=n&&"classList"in document.createElement("p"),r=n&&window.devicePixelRatio>1,o={elements_selector:"IMG",container:e||n?document:null,threshold:300,thresholds:null,data_src:"src",data_srcset:"srcset",data_sizes:"sizes",data_bg:"bg",data_bg_hidpi:"bg-hidpi",data_bg_multi:"bg-multi",data_bg_multi_hidpi:"bg-multi-hidpi",data_poster:"poster",class_applied:"applied",class_loading:"loading",class_loaded:"loaded",class_error:"error",unobserve_completed:!0,unobserve_entered:!1,cancel_on_exit:!1,callback_enter:null,callback_exit:null,callback_applied:null,callback_loading:null,callback_loaded:null,callback_error:null,callback_finish:null,callback_cancel:null,use_native:!1},c=function(n){return t({},o,n)},l=function(t,n){var e,i=new t(n);try{e=new CustomEvent("LazyLoad::Initialized",{detail:{instance:i}})}catch(t){(e=document.createEvent("CustomEvent")).initCustomEvent("LazyLoad::Initialized",!1,!1,{instance:i})}window.dispatchEvent(e)},s=function(t,n){return t.getAttribute("data-"+n)},u=function(t,n,e){var i="data-"+n;null!==e?t.setAttribute(i,e):t.removeAttribute(i)},d=function(t){return s(t,"ll-status")},f=function(t,n){return u(t,"ll-status",n)},_=function(t){return f(t,null)},g=function(t){return null===d(t)},v=function(t){return"native"===d(t)},b=function(t,n,e,i){t&&(void 0===i?void 0===e?t(n):t(n,e):t(n,e,i))},p=function(t,n){a?t.classList.add(n):t.className+=(t.className?" ":"")+n},h=function(t,n){a?t.classList.remove(n):t.className=t.className.replace(new RegExp("(^|\\s+)"+n+"(\\s+|$)")," ").replace(/^\s+/,"").replace(/\s+$/,"")},m=function(t){return t.llTempImage},E=function(t,n){if(n){var e=n._observer;e&&e.unobserve(t)}},I=function(t,n){t&&(t.loadingCount+=n)},A=function(t,n){t&&(t.toLoadCount=n)},L=function(t){for(var n,e=[],i=0;n=t.children[i];i+=1)"SOURCE"===n.tagName&&e.push(n);return e},w=function(t,n,e){e&&t.setAttribute(n,e)},y=function(t,n){t.removeAttribute(n)},k=function(t){return!!t.llOriginalAttrs},z=function(t){if(!k(t)){var n={};n.src=t.getAttribute("src"),n.srcset=t.getAttribute("srcset"),n.sizes=t.getAttribute("sizes"),t.llOriginalAttrs=n}},O=function(t){if(k(t)){var n=t.llOriginalAttrs;w(t,"src",n.src),w(t,"srcset",n.srcset),w(t,"sizes",n.sizes)}},C=function(t,n){w(t,"sizes",s(t,n.data_sizes)),w(t,"srcset",s(t,n.data_srcset)),w(t,"src",s(t,n.data_src))},M=function(t){y(t,"src"),y(t,"srcset"),y(t,"sizes")},N=function(t,n){var e=t.parentNode;e&&"PICTURE"===e.tagName&&L(e).forEach(n)},x=function(t,n){L(t).forEach(n)},R={IMG:function(t,n){N(t,(function(t){z(t),C(t,n)})),z(t),C(t,n)},IFRAME:function(t,n){w(t,"src",s(t,n.data_src))},VIDEO:function(t,n){x(t,(function(t){w(t,"src",s(t,n.data_src))})),w(t,"poster",s(t,n.data_poster)),w(t,"src",s(t,n.data_src)),t.load()}},G=function(t,n){var e=R[t.tagName];e&&e(t,n)},T=function(t,n,e){I(e,1),p(t,n.class_loading),f(t,"loading"),b(n.callback_loading,t,e)},D={IMG:function(t,n){u(t,n.data_src,null),u(t,n.data_srcset,null),u(t,n.data_sizes,null),N(t,(function(t){u(t,n.data_srcset,null),u(t,n.data_sizes,null)}))},IFRAME:function(t,n){u(t,n.data_src,null)},VIDEO:function(t,n){u(t,n.data_src,null),u(t,n.data_poster,null),x(t,(function(t){u(t,n.data_src,null)}))}},F=function(t,n){u(t,n.data_bg_multi,null),u(t,n.data_bg_multi_hidpi,null)},V=function(t,n){var e=D[t.tagName];e?e(t,n):function(t,n){u(t,n.data_bg,null),u(t,n.data_bg_hidpi,null)}(t,n)},P=["IMG","IFRAME","VIDEO"],S=function(t,n){!n||function(t){return t.loadingCount>0}(n)||function(t){return t.toLoadCount>0}(n)||b(t.callback_finish,n)},j=function(t,n,e){t.addEventListener(n,e),t.llEvLisnrs[n]=e},U=function(t,n,e){t.removeEventListener(n,e)},$=function(t){return!!t.llEvLisnrs},q=function(t){if($(t)){var n=t.llEvLisnrs;for(var e in n){var i=n[e];U(t,e,i)}delete t.llEvLisnrs}},H=function(t,n,e){!function(t){delete t.llTempImage}(t),I(e,-1),function(t){t&&(t.toLoadCount-=1)}(e),h(t,n.class_loading),n.unobserve_completed&&E(t,e)},B=function(t,n,e){var i=m(t)||t;$(i)||function(t,n,e){$(t)||(t.llEvLisnrs={});var i="VIDEO"===t.tagName?"loadeddata":"load";j(t,i,n),j(t,"error",e)}(i,(function(a){!function(t,n,e,i){var a=v(n);H(n,e,i),p(n,e.class_loaded),f(n,"loaded"),V(n,e),b(e.callback_loaded,n,i),a||S(e,i)}(0,t,n,e),q(i)}),(function(a){!function(t,n,e,i){var a=v(n);H(n,e,i),p(n,e.class_error),f(n,"error"),b(e.callback_error,n,i),a||S(e,i)}(0,t,n,e),q(i)}))},J=function(t,n,e){!function(t){t.llTempImage=document.createElement("IMG")}(t),B(t,n,e),function(t,n,e){var i=s(t,n.data_bg),a=s(t,n.data_bg_hidpi),o=r&&a?a:i;o&&(t.style.backgroundImage='url("'.concat(o,'")'),m(t).setAttribute("src",o),T(t,n,e))}(t,n,e),function(t,n,e){var i=s(t,n.data_bg_multi),a=s(t,n.data_bg_multi_hidpi),o=r&&a?a:i;o&&(t.style.backgroundImage=o,function(t,n,e){p(t,n.class_applied),f(t,"applied"),F(t,n),n.unobserve_completed&&E(t,n),b(n.callback_applied,t,e)}(t,n,e))}(t,n,e)},K=function(t,n,e){!function(t){return P.indexOf(t.tagName)>-1}(t)?J(t,n,e):function(t,n,e){B(t,n,e),G(t,n),T(t,n,e)}(t,n,e)},Q=["IMG","IFRAME"],W=function(t){return t.use_native&&"loading"in HTMLImageElement.prototype},X=function(t,n,e){t.forEach((function(t){return function(t){return t.isIntersecting||t.intersectionRatio>0}(t)?function(t,n,e,i){b(e.callback_enter,t,n,i),function(t,n,e){n.unobserve_entered&&E(t,e)}(t,e,i),function(t){return!g(t)}(t)||K(t,e,i)}(t.target,t,n,e):function(t,n,e,i){g(t)||(function(t,n,e,i){e.cancel_on_exit&&function(t){return"loading"===d(t)}(t)&&"IMG"===t.tagName&&(q(t),function(t){N(t,(function(t){M(t)})),M(t)}(t),function(t){N(t,(function(t){O(t)})),O(t)}(t),h(t,e.class_loading),I(i,-1),_(t),b(e.callback_cancel,t,n,i))}(t,n,e,i),b(e.callback_exit,t,n,i))}(t.target,t,n,e)}))},Y=function(t){return Array.prototype.slice.call(t)},Z=function(t){return t.container.querySelectorAll(t.elements_selector)},tt=function(t){return function(t){return"error"===d(t)}(t)},nt=function(t,n){return function(t){return Y(t).filter(g)}(t||Z(n))},et=function(t,e){var a=c(t);this._settings=a,this.loadingCount=0,function(t,n){i&&!W(t)&&(n._observer=new IntersectionObserver((function(e){X(e,t,n)}),function(t){return{root:t.container===document?null:t.container,rootMargin:t.thresholds||t.threshold+"px"}}(t)))}(a,this),function(t,e){n&&window.addEventListener("online",(function(){!function(t,n){var e;(e=Z(t),Y(e).filter(tt)).forEach((function(n){h(n,t.class_error),_(n)})),n.update()}(t,e)}))}(a,this),this.update(e)};return et.prototype={update:function(t){var n,a,r=this._settings,o=nt(t,r);A(this,o.length),!e&&i?W(r)?function(t,n,e){t.forEach((function(t){-1!==Q.indexOf(t.tagName)&&(t.setAttribute("loading","lazy"),function(t,n,e){B(t,n,e),G(t,n),V(t,n),f(t,"native")}(t,n,e))})),A(e,0)}(o,r,this):(a=o,function(t){t.disconnect()}(n=this._observer),function(t,n){n.forEach((function(n){t.observe(n)}))}(n,a)):this.loadAll(o)},destroy:function(){this._observer&&this._observer.disconnect(),Z(this._settings).forEach((function(t){delete t.llOriginalAttrs})),delete this._observer,delete this._settings,delete this.loadingCount,delete this.toLoadCount},loadAll:function(t){var n=this,e=this._settings;nt(t,e).forEach((function(t){K(t,e,n)}))}},et.load=function(t,n){var e=c(n);K(t,e)},et.resetStatus=function(t){_(t)},n&&function(t,n){if(n)if(n.length)for(var e,i=0;e=n[i];i+=1)l(t,e);else l(t,n)}(et,window.lazyLoadOptions),et}();
diff --git a/dist/lazyload.js b/dist/lazyload.js
index 97ed3f3d..e0d495a4 100644
--- a/dist/lazyload.js
+++ b/dist/lazyload.js
@@ -29,7 +29,7 @@
   var isHiDpi = runningOnBrowser && window.devicePixelRatio > 1;
 
   var defaultSettings = {
-    elements_selector: "img",
+    elements_selector: "IMG",
     container: isBot || runningOnBrowser ? document : null,
     threshold: 300,
     thresholds: null,
@@ -144,9 +144,11 @@
   var hasStatusError = function hasStatusError(element) {
     return getStatus(element) === statusError;
   };
-  var statusesAfterLoading = [statusLoading, statusApplied, statusLoaded, statusError];
-  var hasStatusAfterLoading = function hasStatusAfterLoading(element) {
-    return statusesAfterLoading.indexOf(getStatus(element)) > -1;
+  var hasStatusNative = function hasStatusNative(element) {
+    return getStatus(element) === statusNative;
+  };
+  var hadStartedLoading = function hadStartedLoading(element) {
+    return !hasEmptyStatus(element);
   };
 
   var safeCallback = function safeCallback(callback, arg1, arg2, arg3) {
@@ -185,7 +187,7 @@
   };
 
   var addTempImage = function addTempImage(element) {
-    element.llTempImage = document.createElement("img");
+    element.llTempImage = document.createElement("IMG");
   };
   var deleteTempImage = function deleteTempImage(element) {
     delete element.llTempImage;
@@ -203,6 +205,9 @@
   var resetObserver = function resetObserver(observer) {
     observer.disconnect();
   };
+  var unobserveIfRequired = function unobserveIfRequired(element, settings, instance) {
+    if (settings.unobserve_entered) unobserve(element, instance);
+  };
 
   var updateLoadingCount = function updateLoadingCount(instance, delta) {
     if (!instance) return;
@@ -223,11 +228,6 @@
     return instance.toLoadCount > 0;
   };
 
-  var _src_ = "src";
-  var _srcset_ = "srcset";
-  var _sizes_ = "sizes";
-  var _poster_ = "poster";
-  var _PICTURE_ = "PICTURE";
   var getSourceTags = function getSourceTags(parentTag) {
     var sourceTags = [];
 
@@ -258,9 +258,9 @@
     }
 
     var originalAttributes = {};
-    originalAttributes[_src_] = element.getAttribute(_src_);
-    originalAttributes[_srcset_] = element.getAttribute(_srcset_);
-    originalAttributes[_sizes_] = element.getAttribute(_sizes_);
+    originalAttributes["src"] = element.getAttribute("src");
+    originalAttributes["srcset"] = element.getAttribute("srcset");
+    originalAttributes["sizes"] = element.getAttribute("sizes");
     element.llOriginalAttrs = originalAttributes;
   };
   var restoreOriginalImageAttributes = function restoreOriginalImageAttributes(element) {
@@ -269,30 +269,34 @@
     }
 
     var originalAttributes = element.llOriginalAttrs;
-    setAttributeIfValue(element, _src_, originalAttributes[_src_]);
-    setAttributeIfValue(element, _srcset_, originalAttributes[_srcset_]);
-    setAttributeIfValue(element, _sizes_, originalAttributes[_sizes_]);
+    setAttributeIfValue(element, "src", originalAttributes["src"]);
+    setAttributeIfValue(element, "srcset", originalAttributes["srcset"]);
+    setAttributeIfValue(element, "sizes", originalAttributes["sizes"]);
   };
   var setImageAttributes = function setImageAttributes(element, settings) {
-    setAttributeIfValue(element, _sizes_, getData(element, settings.data_sizes));
-    setAttributeIfValue(element, _srcset_, getData(element, settings.data_srcset));
-    setAttributeIfValue(element, _src_, getData(element, settings.data_src));
+    setAttributeIfValue(element, "sizes", getData(element, settings.data_sizes));
+    setAttributeIfValue(element, "srcset", getData(element, settings.data_srcset));
+    setAttributeIfValue(element, "src", getData(element, settings.data_src));
   };
   var resetImageAttributes = function resetImageAttributes(element) {
-    resetAttribute(element, _src_);
-    resetAttribute(element, _srcset_);
-    resetAttribute(element, _sizes_);
+    resetAttribute(element, "src");
+    resetAttribute(element, "srcset");
+    resetAttribute(element, "sizes");
   };
   var forEachPictureSource = function forEachPictureSource(element, fn) {
     var parent = element.parentNode;
 
-    if (!parent || parent.tagName !== _PICTURE_) {
+    if (!parent || parent.tagName !== "PICTURE") {
       return;
     }
 
     var sourceTags = getSourceTags(parent);
     sourceTags.forEach(fn);
   };
+  var forEachVideoSource = function forEachVideoSource(element, fn) {
+    var sourceTags = getSourceTags(element);
+    sourceTags.forEach(fn);
+  };
   var restoreOriginalAttributesImg = function restoreOriginalAttributesImg(element) {
     forEachPictureSource(element, function (sourceTag) {
       restoreOriginalImageAttributes(sourceTag);
@@ -314,15 +318,14 @@
     resetImageAttributes(element);
   };
   var setSourcesIframe = function setSourcesIframe(element, settings) {
-    setAttributeIfValue(element, _src_, getData(element, settings.data_src));
+    setAttributeIfValue(element, "src", getData(element, settings.data_src));
   };
   var setSourcesVideo = function setSourcesVideo(element, settings) {
-    var sourceTags = getSourceTags(element);
-    sourceTags.forEach(function (sourceTag) {
-      setAttributeIfValue(sourceTag, _src_, getData(sourceTag, settings.data_src));
+    forEachVideoSource(element, function (sourceTag) {
+      setAttributeIfValue(sourceTag, "src", getData(sourceTag, settings.data_src));
     });
-    setAttributeIfValue(element, _poster_, getData(element, settings.data_poster));
-    setAttributeIfValue(element, _src_, getData(element, settings.data_src));
+    setAttributeIfValue(element, "poster", getData(element, settings.data_poster));
+    setAttributeIfValue(element, "src", getData(element, settings.data_src));
     element.load();
   };
   var setSourcesFunctions = {
@@ -336,12 +339,8 @@
     var bgDataValue = isHiDpi && bgHiDpiValue ? bgHiDpiValue : bg1xValue;
     if (!bgDataValue) return;
     element.style.backgroundImage = "url(\"".concat(bgDataValue, "\")");
-    getTempImage(element).setAttribute(_src_, bgDataValue); // Annotate and notify loading
-
-    updateLoadingCount(instance, +1);
-    addClass(element, settings.class_loading);
-    setStatus(element, statusLoading);
-    safeCallback(settings.callback_loading, element, instance);
+    getTempImage(element).setAttribute("src", bgDataValue);
+    manageLoading(element, settings, instance);
   }; // NOTE: THE TEMP IMAGE TRICK CANNOT BE DONE WITH data-multi-bg
   // BECAUSE INSIDE ITS VALUES MUST BE WRAPPED WITH URL() AND ONE OF THEM
   // COULD BE A GRADIENT BACKGROUND IMAGE
@@ -355,35 +354,80 @@
       return;
     }
 
-    element.style.backgroundImage = bgDataValue; // Annotate and notify applied
+    element.style.backgroundImage = bgDataValue;
+    manageApplied(element, settings, instance);
+  };
+  var setSources = function setSources(element, settings) {
+    var setSourcesFunction = setSourcesFunctions[element.tagName];
 
+    if (!setSourcesFunction) {
+      return;
+    }
+
+    setSourcesFunction(element, settings);
+  };
+  var manageApplied = function manageApplied(element, settings, instance) {
     addClass(element, settings.class_applied);
     setStatus(element, statusApplied);
-    safeCallback(settings.callback_applied, element, instance);
+    removeDataMultiBackground(element, settings);
 
     if (settings.unobserve_completed) {
       // Unobserve now because we can't do it on load
       unobserve(element, settings);
     }
-  };
-  var setSources = function setSources(element, settings, instance) {
-    var setSourcesFunction = setSourcesFunctions[element.tagName];
-
-    if (!setSourcesFunction) {
-      return;
-    }
-
-    setSourcesFunction(element, settings); // Annotate and notify loading
 
+    safeCallback(settings.callback_applied, element, instance);
+  };
+  var manageLoading = function manageLoading(element, settings, instance) {
     updateLoadingCount(instance, +1);
     addClass(element, settings.class_loading);
     setStatus(element, statusLoading);
     safeCallback(settings.callback_loading, element, instance);
+  }; // REMOVE DATA ATTRIBUTES --------------
+
+  var removeDataImg = function removeDataImg(element, settings) {
+    setData(element, settings.data_src, null);
+    setData(element, settings.data_srcset, null);
+    setData(element, settings.data_sizes, null);
+    forEachPictureSource(element, function (sourceTag) {
+      setData(sourceTag, settings.data_srcset, null);
+      setData(sourceTag, settings.data_sizes, null);
+    });
+  };
+  var removeDataIframe = function removeDataIframe(element, settings) {
+    setData(element, settings.data_src, null);
+  };
+  var removeDataVideo = function removeDataVideo(element, settings) {
+    setData(element, settings.data_src, null);
+    setData(element, settings.data_poster, null);
+    forEachVideoSource(element, function (sourceTag) {
+      setData(sourceTag, settings.data_src, null);
+    });
+  };
+  var removeDataFunctions = {
+    IMG: removeDataImg,
+    IFRAME: removeDataIframe,
+    VIDEO: removeDataVideo
+  };
+  var removeDataBackground = function removeDataBackground(element, settings) {
+    setData(element, settings.data_bg, null);
+    setData(element, settings.data_bg_hidpi, null);
+  };
+  var removeDataMultiBackground = function removeDataMultiBackground(element, settings) {
+    setData(element, settings.data_bg_multi, null);
+    setData(element, settings.data_bg_multi_hidpi, null);
+  };
+  var removeDataAttributes = function removeDataAttributes(element, settings) {
+    var removeDataFunction = removeDataFunctions[element.tagName];
+
+    if (removeDataFunction) {
+      removeDataFunction(element, settings);
+      return;
+    }
+
+    removeDataBackground(element, settings);
   };
 
-  var genericLoadEventName = "load";
-  var mediaLoadEventName = "loadeddata";
-  var errorEventName = "error";
   var elementsWithLoadEvent = ["IMG", "IFRAME", "VIDEO"];
   var hasLoadEvent = function hasLoadEvent(element) {
     return elementsWithLoadEvent.indexOf(element.tagName) > -1;
@@ -405,12 +449,9 @@
   };
   var addEventListeners = function addEventListeners(element, loadHandler, errorHandler) {
     if (!hasEventListeners(element)) element.llEvLisnrs = {};
-    addEventListener(element, genericLoadEventName, loadHandler);
-    addEventListener(element, errorEventName, errorHandler);
-
-    if (element.tagName === "VIDEO") {
-      addEventListener(element, mediaLoadEventName, loadHandler);
-    }
+    var loadEventName = element.tagName === "VIDEO" ? "loadeddata" : "load";
+    addEventListener(element, loadEventName, loadHandler);
+    addEventListener(element, "error", errorHandler);
   };
   var removeEventListeners = function removeEventListeners(element) {
     if (!hasEventListeners(element)) {
@@ -437,18 +478,21 @@
     }
   };
   var loadHandler = function loadHandler(event, element, settings, instance) {
+    var goingNative = hasStatusNative(element);
     doneHandler(element, settings, instance);
     addClass(element, settings.class_loaded);
     setStatus(element, statusLoaded);
+    removeDataAttributes(element, settings);
     safeCallback(settings.callback_loaded, element, instance);
-    checkFinish(settings, instance);
+    if (!goingNative) checkFinish(settings, instance);
   };
   var errorHandler = function errorHandler(event, element, settings, instance) {
+    var goingNative = hasStatusNative(element);
     doneHandler(element, settings, instance);
     addClass(element, settings.class_error);
     setStatus(element, statusError);
     safeCallback(settings.callback_error, element, instance);
-    checkFinish(settings, instance);
+    if (!goingNative) checkFinish(settings, instance);
   };
   var addOneShotEventListeners = function addOneShotEventListeners(element, settings, instance) {
     var elementToListenTo = getTempImage(element) || element;
@@ -480,7 +524,8 @@
 
   var loadRegular = function loadRegular(element, settings, instance) {
     addOneShotEventListeners(element, settings, instance);
-    setSources(element, settings, instance);
+    setSources(element, settings);
+    manageLoading(element, settings, instance);
   };
 
   var load = function load(element, settings, instance) {
@@ -489,72 +534,53 @@
     } else {
       loadBackground(element, settings, instance);
     }
-
-    checkFinish(settings, instance);
   };
   var loadNative = function loadNative(element, settings, instance) {
     addOneShotEventListeners(element, settings, instance);
-    setSources(element, settings, instance);
+    setSources(element, settings);
+    removeDataAttributes(element, settings);
     setStatus(element, statusNative);
-    checkFinish(settings, instance);
   };
 
-  var cancelIfLoading = function cancelIfLoading(element, entry, settings, instance) {
-    if (element.tagName !== "IMG") {
-      // Can't cancel loading on anything but images
-      return;
-    }
+  var cancelLoadingIfRequired = function cancelLoadingIfRequired(element, entry, settings, instance) {
+    if (!settings.cancel_on_exit) return;
+    if (!hasStatusLoading(element)) return;
+    if (element.tagName !== "IMG") return; //Works only on images
 
     removeEventListeners(element);
     resetSourcesImg(element);
     restoreOriginalAttributesImg(element);
     removeClass(element, settings.class_loading);
     updateLoadingCount(instance, -1);
-    safeCallback(settings.callback_cancel, element, entry, instance); // setTimeout is needed because the "callback_cancel" implementation
-    // could be out of the main thread, e.g. `img.setAttribute("src", "")`
-
-    setTimeout(function () {
-      resetStatus(element);
-    }, 0);
+    resetStatus(element);
+    safeCallback(settings.callback_cancel, element, entry, instance);
   };
 
   var onEnter = function onEnter(element, entry, settings, instance) {
     safeCallback(settings.callback_enter, element, entry, instance);
-
-    if (hasStatusAfterLoading(element)) {
-      return; //Prevent loading it again
-    }
-
-    if (settings.unobserve_entered) {
-      unobserve(element, instance);
-    }
+    unobserveIfRequired(element, settings, instance);
+    if (hadStartedLoading(element)) return; //Prevent loading it again
 
     load(element, settings, instance);
   };
   var onExit = function onExit(element, entry, settings, instance) {
-    if (hasEmptyStatus(element)) {
-      return; //Ignore the first pass, at landing
-    }
-
-    if (settings.cancel_on_exit && hasStatusLoading(element)) {
-      cancelIfLoading(element, entry, settings, instance);
-    }
+    if (hasEmptyStatus(element)) return; //Ignore the first pass, at landing
 
+    cancelLoadingIfRequired(element, entry, settings, instance);
     safeCallback(settings.callback_exit, element, entry, instance);
   };
 
-  var nativeLazyTags = ["IMG", "IFRAME"];
-  var loadingString = "loading";
+  var tagsWithNativeLazy = ["IMG", "IFRAME"];
   var shouldUseNative = function shouldUseNative(settings) {
-    return settings.use_native && loadingString in HTMLImageElement.prototype;
+    return settings.use_native && "loading" in HTMLImageElement.prototype;
   };
   var loadAllNative = function loadAllNative(elements, settings, instance) {
     elements.forEach(function (element) {
-      if (nativeLazyTags.indexOf(element.tagName) === -1) {
+      if (tagsWithNativeLazy.indexOf(element.tagName) === -1) {
         return;
       }
 
-      element.setAttribute(loadingString, "lazy"); //TODO: Move inside the loadNative method
+      element.setAttribute("loading", "lazy"); //TODO: Move inside the loadNative method
 
       loadNative(element, settings, instance);
     });
@@ -665,7 +691,12 @@
       // Observer
       if (this._observer) {
         this._observer.disconnect();
-      }
+      } // Clean custom attributes on elements
+
+
+      queryElements(this._settings).forEach(function (element) {
+        delete element.llOriginalAttrs;
+      }); // Delete all internal props
 
       delete this._observer;
       delete this._settings;
diff --git a/dist/lazyload.min.js b/dist/lazyload.min.js
index 0f2eca80..d4eee204 100644
--- a/dist/lazyload.min.js
+++ b/dist/lazyload.min.js
@@ -1 +1 @@
-!function(t,n){"object"==typeof exports&&"undefined"!=typeof module?module.exports=n():"function"==typeof define&&define.amd?define(n):(t=t||self).LazyLoad=n()}(this,(function(){"use strict";function t(){return(t=Object.assign||function(t){for(var n=1;n<arguments.length;n++){var e=arguments[n];for(var i in e)Object.prototype.hasOwnProperty.call(e,i)&&(t[i]=e[i])}return t}).apply(this,arguments)}var n="undefined"!=typeof window,e=n&&!("onscroll"in window)||"undefined"!=typeof navigator&&/(gle|ing|ro)bot|crawl|spider/i.test(navigator.userAgent),i=n&&"IntersectionObserver"in window,o=n&&"classList"in document.createElement("p"),a=n&&window.devicePixelRatio>1,r={elements_selector:"img",container:e||n?document:null,threshold:300,thresholds:null,data_src:"src",data_srcset:"srcset",data_sizes:"sizes",data_bg:"bg",data_bg_hidpi:"bg-hidpi",data_bg_multi:"bg-multi",data_bg_multi_hidpi:"bg-multi-hidpi",data_poster:"poster",class_applied:"applied",class_loading:"loading",class_loaded:"loaded",class_error:"error",unobserve_completed:!0,unobserve_entered:!1,cancel_on_exit:!1,callback_enter:null,callback_exit:null,callback_applied:null,callback_loading:null,callback_loaded:null,callback_error:null,callback_finish:null,callback_cancel:null,use_native:!1},c=function(n){return t({},r,n)},l=function(t,n){var e,i=new t(n);try{e=new CustomEvent("LazyLoad::Initialized",{detail:{instance:i}})}catch(t){(e=document.createEvent("CustomEvent")).initCustomEvent("LazyLoad::Initialized",!1,!1,{instance:i})}window.dispatchEvent(e)},s=function(t,n){return t.getAttribute("data-"+n)},u=function(t){return s(t,"ll-status")},d=function(t,n){return function(t,n,e){var i="data-"+n;null!==e?t.setAttribute(i,e):t.removeAttribute(i)}(t,"ll-status",n)},f=function(t){return d(t,null)},_=function(t){return null===u(t)},g=["loading","applied","loaded","error"],v=function(t,n,e,i){t&&(void 0===i?void 0===e?t(n):t(n,e):t(n,e,i))},p=function(t,n){o?t.classList.add(n):t.className+=(t.className?" ":"")+n},b=function(t,n){o?t.classList.remove(n):t.className=t.className.replace(new RegExp("(^|\\s+)"+n+"(\\s+|$)")," ").replace(/^\s+/,"").replace(/\s+$/,"")},m=function(t){return t.llTempImage},h=function(t,n){if(n){var e=n._observer;e&&e.unobserve(t)}},E=function(t,n){t&&(t.loadingCount+=n)},L=function(t,n){t&&(t.toLoadCount=n)},y=function(t){for(var n,e=[],i=0;n=t.children[i];i+=1)"SOURCE"===n.tagName&&e.push(n);return e},I=function(t,n,e){e&&t.setAttribute(n,e)},A=function(t,n){t.removeAttribute(n)},w=function(t){return!!t.llOriginalAttrs},k=function(t){if(!w(t)){var n={};n.src=t.getAttribute("src"),n.srcset=t.getAttribute("srcset"),n.sizes=t.getAttribute("sizes"),t.llOriginalAttrs=n}},z=function(t){if(w(t)){var n=t.llOriginalAttrs;I(t,"src",n.src),I(t,"srcset",n.srcset),I(t,"sizes",n.sizes)}},O=function(t,n){I(t,"sizes",s(t,n.data_sizes)),I(t,"srcset",s(t,n.data_srcset)),I(t,"src",s(t,n.data_src))},C=function(t){A(t,"src"),A(t,"srcset"),A(t,"sizes")},x=function(t,n){var e=t.parentNode;e&&"PICTURE"===e.tagName&&y(e).forEach(n)},N={IMG:function(t,n){x(t,(function(t){k(t),O(t,n)})),k(t),O(t,n)},IFRAME:function(t,n){I(t,"src",s(t,n.data_src))},VIDEO:function(t,n){y(t).forEach((function(t){I(t,"src",s(t,n.data_src))})),I(t,"poster",s(t,n.data_poster)),I(t,"src",s(t,n.data_src)),t.load()}},M=function(t,n,e){var i=N[t.tagName];i&&(i(t,n),E(e,1),p(t,n.class_loading),d(t,"loading"),v(n.callback_loading,t,e))},R=["IMG","IFRAME","VIDEO"],T=function(t,n){!n||function(t){return t.loadingCount>0}(n)||function(t){return t.toLoadCount>0}(n)||v(t.callback_finish,n)},G=function(t,n,e){t.addEventListener(n,e),t.llEvLisnrs[n]=e},j=function(t,n,e){t.removeEventListener(n,e)},D=function(t){return!!t.llEvLisnrs},F=function(t){if(D(t)){var n=t.llEvLisnrs;for(var e in n){var i=n[e];j(t,e,i)}delete t.llEvLisnrs}},P=function(t,n,e){!function(t){delete t.llTempImage}(t),E(e,-1),function(t){t&&(t.toLoadCount-=1)}(e),b(t,n.class_loading),n.unobserve_completed&&h(t,e)},S=function(t,n,e){var i=m(t)||t;if(!D(i)){!function(t,n,e){D(t)||(t.llEvLisnrs={}),G(t,"load",n),G(t,"error",e),"VIDEO"===t.tagName&&G(t,"loadeddata",n)}(i,(function(o){!function(t,n,e,i){P(n,e,i),p(n,e.class_loaded),d(n,"loaded"),v(e.callback_loaded,n,i),T(e,i)}(0,t,n,e),F(i)}),(function(o){!function(t,n,e,i){P(n,e,i),p(n,e.class_error),d(n,"error"),v(e.callback_error,n,i),T(e,i)}(0,t,n,e),F(i)}))}},V=function(t,n,e){!function(t){t.llTempImage=document.createElement("img")}(t),S(t,n,e),function(t,n,e){var i=s(t,n.data_bg),o=s(t,n.data_bg_hidpi),r=a&&o?o:i;r&&(t.style.backgroundImage='url("'.concat(r,'")'),m(t).setAttribute("src",r),E(e,1),p(t,n.class_loading),d(t,"loading"),v(n.callback_loading,t,e))}(t,n,e),function(t,n,e){var i=s(t,n.data_bg_multi),o=s(t,n.data_bg_multi_hidpi),r=a&&o?o:i;r&&(t.style.backgroundImage=r,p(t,n.class_applied),d(t,"applied"),v(n.callback_applied,t,e),n.unobserve_completed&&h(t,n))}(t,n,e)},U=function(t,n,e){!function(t){return R.indexOf(t.tagName)>-1}(t)?V(t,n,e):function(t,n,e){S(t,n,e),M(t,n,e)}(t,n,e),T(n,e)},$=function(t,n,e,i){"IMG"===t.tagName&&(F(t),function(t){x(t,(function(t){C(t)})),C(t)}(t),function(t){x(t,(function(t){z(t)})),z(t)}(t),b(t,e.class_loading),E(i,-1),v(e.callback_cancel,t,n,i),setTimeout((function(){f(t)}),0))},q=function(t,n,e,i){v(e.callback_enter,t,n,i),function(t){return g.indexOf(u(t))>-1}(t)||(e.unobserve_entered&&h(t,i),U(t,e,i))},H=function(t,n,e,i){_(t)||(e.cancel_on_exit&&function(t){return"loading"===u(t)}(t)&&$(t,n,e,i),v(e.callback_exit,t,n,i))},B=["IMG","IFRAME"],J=function(t){return t.use_native&&"loading"in 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diff --git a/package-lock.json b/package-lock.json
index 2001ab78..5c96c9b6 100644
--- a/package-lock.json
+++ b/package-lock.json
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 {
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-        "@babel/types": "^7.9.0",
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+      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.9.6.tgz",
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-      "resolved": "https://registry.npmjs.org/@babel/helper-compilation-targets/-/helper-compilation-targets-7.8.7.tgz",
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+      "version": "7.9.6",
+      "resolved": "https://registry.npmjs.org/@babel/helper-compilation-targets/-/helper-compilation-targets-7.9.6.tgz",
+      "integrity": "sha512-x2Nvu0igO0ejXzx09B/1fGBxY9NXQlBW2kZsSxCJft+KHN8t9XWzIvFxtPHnBOAXpVsdxZKZFbRUC8TsNKajMw==",
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-        "browserslist": "^4.9.1",
+        "@babel/compat-data": "^7.9.6",
+        "browserslist": "^4.11.1",
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       "version": "1.8.0",
       "resolved": "https://registry.npmjs.org/psl/-/psl-1.8.0.tgz",
@@ -5742,6 +5561,88 @@
       "integrity": "sha512-24e6ynE2H+OKt4kqsOvNd8kBpV65zoxbA4BVsEOB3ARVWQki/DHzaUoC5KuON/BiccDaCCTZBuOcfZs70kR8bQ==",
       "dev": true
     },
+    "read-pkg": {
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/read-pkg/-/read-pkg-5.2.0.tgz",
+      "integrity": "sha512-Ug69mNOpfvKDAc2Q8DRpMjjzdtrnv9HcSMX+4VsZxD1aZ6ZzrIE7rlzXBtWTyhULSMKg076AW6WR5iZpD0JiOg==",
+      "dev": true,
+      "requires": {
+        "@types/normalize-package-data": "^2.4.0",
+        "normalize-package-data": "^2.5.0",
+        "parse-json": "^5.0.0",
+        "type-fest": "^0.6.0"
+      },
+      "dependencies": {
+        "type-fest": {
+          "version": "0.6.0",
+          "resolved": "https://registry.npmjs.org/type-fest/-/type-fest-0.6.0.tgz",
+          "integrity": "sha512-q+MB8nYR1KDLrgr4G5yemftpMC7/QLqVndBmEEdqzmNj5dcFOO4Oo8qlwZE3ULT3+Zim1F8Kq4cBnikNhlCMlg==",
+          "dev": true
+        }
+      }
+    },
+    "read-pkg-up": {
+      "version": "7.0.1",
+      "resolved": "https://registry.npmjs.org/read-pkg-up/-/read-pkg-up-7.0.1.tgz",
+      "integrity": "sha512-zK0TB7Xd6JpCLmlLmufqykGE+/TlOePD6qKClNW7hHDKFh/J7/7gCWGR7joEQEW1bKq3a3yUZSObOoWLFQ4ohg==",
+      "dev": true,
+      "requires": {
+        "find-up": "^4.1.0",
+        "read-pkg": "^5.2.0",
+        "type-fest": "^0.8.1"
+      },
+      "dependencies": {
+        "find-up": {
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/find-up/-/find-up-4.1.0.tgz",
+          "integrity": "sha512-PpOwAdQ/YlXQ2vj8a3h8IipDuYRi3wceVQQGYWxNINccq40Anw7BlsEXCMbt1Zt+OLA6Fq9suIpIWD0OsnISlw==",
+          "dev": true,
+          "requires": {
+            "locate-path": "^5.0.0",
+            "path-exists": "^4.0.0"
+          }
+        },
+        "locate-path": {
+          "version": "5.0.0",
+          "resolved": "https://registry.npmjs.org/locate-path/-/locate-path-5.0.0.tgz",
+          "integrity": "sha512-t7hw9pI+WvuwNJXwk5zVHpyhIqzg2qTlklJOf0mVxGSbe3Fp2VieZcduNYjaLDoy6p9uGpQEGWG87WpMKlNq8g==",
+          "dev": true,
+          "requires": {
+            "p-locate": "^4.1.0"
+          }
+        },
+        "p-limit": {
+          "version": "2.3.0",
+          "resolved": "https://registry.npmjs.org/p-limit/-/p-limit-2.3.0.tgz",
+          "integrity": "sha512-//88mFWSJx8lxCzwdAABTJL2MyWB12+eIY7MDL2SqLmAkeKU9qxRvWuSyTjm3FUmpBEMuFfckAIqEaVGUDxb6w==",
+          "dev": true,
+          "requires": {
+            "p-try": "^2.0.0"
+          }
+        },
+        "p-locate": {
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/p-locate/-/p-locate-4.1.0.tgz",
+          "integrity": "sha512-R79ZZ/0wAxKGu3oYMlz8jy/kbhsNrS7SKZ7PxEHBgJ5+F2mtFW2fK2cOtBh1cHYkQsbzFV7I+EoRKe6Yt0oK7A==",
+          "dev": true,
+          "requires": {
+            "p-limit": "^2.2.0"
+          }
+        },
+        "p-try": {
+          "version": "2.2.0",
+          "resolved": "https://registry.npmjs.org/p-try/-/p-try-2.2.0.tgz",
+          "integrity": "sha512-R4nPAVTAU0B9D35/Gk3uJf/7XYbQcyohSKdvAxIRSNghFl4e71hVoGnBNQz9cWaXxO2I10KTC+3jMdvvoKw6dQ==",
+          "dev": true
+        },
+        "path-exists": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/path-exists/-/path-exists-4.0.0.tgz",
+          "integrity": "sha512-ak9Qy5Q7jYb2Wwcey5Fpvg2KoAc/ZIhLSLOSBmRmygPsGwkVVt0fZa0qrtMz+m6tJTAHfZQ8FnmB4MG4LWy7/w==",
+          "dev": true
+        }
+      }
+    },
     "realpath-native": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/realpath-native/-/realpath-native-2.0.0.tgz",
@@ -5872,12 +5773,6 @@
         "uuid": "^3.3.2"
       },
       "dependencies": {
-        "safe-buffer": {
-          "version": "5.2.0",
-          "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.0.tgz",
-          "integrity": "sha512-fZEwUGbVl7kouZs1jCdMLdt95hdIv0ZeHg6L7qPeciMZhZ+/gdesW4wgTARkrFWEpspjEATAzUGPG8N2jJiwbg==",
-          "dev": true
-        },
         "tough-cookie": {
           "version": "2.5.0",
           "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-2.5.0.tgz",
@@ -5935,9 +5830,9 @@
       "dev": true
     },
     "resolve": {
-      "version": "1.15.1",
-      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.15.1.tgz",
-      "integrity": "sha512-84oo6ZTtoTUpjgNEr5SJyzQhzL72gaRodsSfyxC/AXRvwu0Yse9H8eF9IpGo7b8YetZhlI6v7ZQ6bKBFV/6S7w==",
+      "version": "1.17.0",
+      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.17.0.tgz",
+      "integrity": "sha512-ic+7JYiV8Vi2yzQGFWOkiZD5Z9z7O2Zhm9XMaTxdJExKasieFCr+yXZ/WmXsckHiKl12ar0y6XiXDx3m4RHn1w==",
       "dev": true,
       "requires": {
         "path-parse": "^1.0.6"
@@ -6029,9 +5924,9 @@
       "dev": true
     },
     "safe-buffer": {
-      "version": "5.1.1",
-      "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.1.tgz",
-      "integrity": "sha512-kKvNJn6Mm93gAczWVJg7wH+wGYWNrDHdWvpUmHyEsgCtIwwo3bqPtV4tR5tuPaUhTOo/kvhVwd8XwwOllGYkbg==",
+      "version": "5.1.2",
+      "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
+      "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==",
       "dev": true
     },
     "safe-regex": {
@@ -6451,6 +6346,38 @@
       "integrity": "sha1-PpNdfd1zYxuXZZlW1VEo6HtQhKM=",
       "dev": true
     },
+    "spdx-correct": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/spdx-correct/-/spdx-correct-3.1.0.tgz",
+      "integrity": "sha512-lr2EZCctC2BNR7j7WzJ2FpDznxky1sjfxvvYEyzxNyb6lZXHODmEoJeFu4JupYlkfha1KZpJyoqiJ7pgA1qq8Q==",
+      "dev": true,
+      "requires": {
+        "spdx-expression-parse": "^3.0.0",
+        "spdx-license-ids": "^3.0.0"
+      }
+    },
+    "spdx-exceptions": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/spdx-exceptions/-/spdx-exceptions-2.3.0.tgz",
+      "integrity": "sha512-/tTrYOC7PPI1nUAgx34hUpqXuyJG+DTHJTnIULG4rDygi4xu/tfgmq1e1cIRwRzwZgo4NLySi+ricLkZkw4i5A==",
+      "dev": true
+    },
+    "spdx-expression-parse": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/spdx-expression-parse/-/spdx-expression-parse-3.0.1.tgz",
+      "integrity": "sha512-cbqHunsQWnJNE6KhVSMsMeH5H/L9EpymbzqTQ3uLwNCLZ1Q481oWaofqH7nO6V07xlXwY6PhQdQ2IedWx/ZK4Q==",
+      "dev": true,
+      "requires": {
+        "spdx-exceptions": "^2.1.0",
+        "spdx-license-ids": "^3.0.0"
+      }
+    },
+    "spdx-license-ids": {
+      "version": "3.0.5",
+      "resolved": "https://registry.npmjs.org/spdx-license-ids/-/spdx-license-ids-3.0.5.tgz",
+      "integrity": "sha512-J+FWzZoynJEXGphVIS+XEh3kFSjZX/1i9gFBaWQcB+/tmpe2qUsSBABpcxqxnAxFdiUFEgAX1bjYGQvIZmoz9Q==",
+      "dev": true
+    },
     "split-string": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/split-string/-/split-string-3.1.0.tgz",
@@ -6775,9 +6702,9 @@
       "dev": true
     },
     "type-fest": {
-      "version": "0.11.0",
-      "resolved": "https://registry.npmjs.org/type-fest/-/type-fest-0.11.0.tgz",
-      "integrity": "sha512-OdjXJxnCN1AvyLSzeKIgXTXxV+99ZuXl3Hpo9XpJAv9MBcHrrJOQ5kV7ypXOuQie+AmWG25hLbiKdwYTifzcfQ==",
+      "version": "0.8.1",
+      "resolved": "https://registry.npmjs.org/type-fest/-/type-fest-0.8.1.tgz",
+      "integrity": "sha512-4dbzIzqvjtgiM5rw1k5rEHtBANKmdudhGyBEajN01fEyhaAIhsoKNy6y7+IN93IfpFtwY9iqi7kD+xwKhQsNJA==",
       "dev": true
     },
     "typedarray-to-buffer": {
@@ -6897,9 +6824,9 @@
       "dev": true
     },
     "v8-to-istanbul": {
-      "version": "4.1.3",
-      "resolved": "https://registry.npmjs.org/v8-to-istanbul/-/v8-to-istanbul-4.1.3.tgz",
-      "integrity": "sha512-sAjOC+Kki6aJVbUOXJbcR0MnbfjvBzwKZazEJymA2IX49uoOdEdk+4fBq5cXgYgiyKtAyrrJNtBZdOeDIF+Fng==",
+      "version": "4.1.4",
+      "resolved": "https://registry.npmjs.org/v8-to-istanbul/-/v8-to-istanbul-4.1.4.tgz",
+      "integrity": "sha512-Rw6vJHj1mbdK8edjR7+zuJrpDtKIgNdAvTSAcpYfgMIw+u2dPDntD3dgN4XQFLU2/fvFQdzj+EeSGfd/jnY5fQ==",
       "dev": true,
       "requires": {
         "@types/istanbul-lib-coverage": "^2.0.1",
@@ -6915,6 +6842,16 @@
         }
       }
     },
+    "validate-npm-package-license": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/validate-npm-package-license/-/validate-npm-package-license-3.0.4.tgz",
+      "integrity": "sha512-DpKm2Ui/xN7/HQKCtpZxoRWBhZ9Z0kqtygG8XCgNQ8ZlDnxuQmWhj566j8fN4Cu3/JmbhsDo7fcAJq4s9h27Ew==",
+      "dev": true,
+      "requires": {
+        "spdx-correct": "^3.0.0",
+        "spdx-expression-parse": "^3.0.0"
+      }
+    },
     "verror": {
       "version": "1.10.0",
       "resolved": "https://registry.npmjs.org/verror/-/verror-1.10.0.tgz",
@@ -7065,9 +7002,9 @@
       }
     },
     "ws": {
-      "version": "7.2.3",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-7.2.3.tgz",
-      "integrity": "sha512-HTDl9G9hbkNDk98naoR/cHDws7+EyYMOdL1BmjsZXRUjf7d+MficC4B7HLUPlSiho0vg+CWKrGIt/VJBd1xunQ==",
+      "version": "7.3.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-7.3.0.tgz",
+      "integrity": "sha512-iFtXzngZVXPGgpTlP1rBqsUK82p9tKqsWRPg5L56egiljujJT3vGAYnHANvFxBieXrTFavhzhxW52jnaWV+w2w==",
       "dev": true
     },
     "xml-name-validator": {
@@ -7105,12 +7042,63 @@
         "which-module": "^2.0.0",
         "y18n": "^4.0.0",
         "yargs-parser": "^18.1.1"
+      },
+      "dependencies": {
+        "find-up": {
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/find-up/-/find-up-4.1.0.tgz",
+          "integrity": "sha512-PpOwAdQ/YlXQ2vj8a3h8IipDuYRi3wceVQQGYWxNINccq40Anw7BlsEXCMbt1Zt+OLA6Fq9suIpIWD0OsnISlw==",
+          "dev": true,
+          "requires": {
+            "locate-path": "^5.0.0",
+            "path-exists": "^4.0.0"
+          }
+        },
+        "locate-path": {
+          "version": "5.0.0",
+          "resolved": "https://registry.npmjs.org/locate-path/-/locate-path-5.0.0.tgz",
+          "integrity": "sha512-t7hw9pI+WvuwNJXwk5zVHpyhIqzg2qTlklJOf0mVxGSbe3Fp2VieZcduNYjaLDoy6p9uGpQEGWG87WpMKlNq8g==",
+          "dev": true,
+          "requires": {
+            "p-locate": "^4.1.0"
+          }
+        },
+        "p-limit": {
+          "version": "2.3.0",
+          "resolved": "https://registry.npmjs.org/p-limit/-/p-limit-2.3.0.tgz",
+          "integrity": "sha512-//88mFWSJx8lxCzwdAABTJL2MyWB12+eIY7MDL2SqLmAkeKU9qxRvWuSyTjm3FUmpBEMuFfckAIqEaVGUDxb6w==",
+          "dev": true,
+          "requires": {
+            "p-try": "^2.0.0"
+          }
+        },
+        "p-locate": {
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/p-locate/-/p-locate-4.1.0.tgz",
+          "integrity": "sha512-R79ZZ/0wAxKGu3oYMlz8jy/kbhsNrS7SKZ7PxEHBgJ5+F2mtFW2fK2cOtBh1cHYkQsbzFV7I+EoRKe6Yt0oK7A==",
+          "dev": true,
+          "requires": {
+            "p-limit": "^2.2.0"
+          }
+        },
+        "p-try": {
+          "version": "2.2.0",
+          "resolved": "https://registry.npmjs.org/p-try/-/p-try-2.2.0.tgz",
+          "integrity": "sha512-R4nPAVTAU0B9D35/Gk3uJf/7XYbQcyohSKdvAxIRSNghFl4e71hVoGnBNQz9cWaXxO2I10KTC+3jMdvvoKw6dQ==",
+          "dev": true
+        },
+        "path-exists": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/path-exists/-/path-exists-4.0.0.tgz",
+          "integrity": "sha512-ak9Qy5Q7jYb2Wwcey5Fpvg2KoAc/ZIhLSLOSBmRmygPsGwkVVt0fZa0qrtMz+m6tJTAHfZQ8FnmB4MG4LWy7/w==",
+          "dev": true
+        }
       }
     },
     "yargs-parser": {
-      "version": "18.1.2",
-      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-18.1.2.tgz",
-      "integrity": "sha512-hlIPNR3IzC1YuL1c2UwwDKpXlNFBqD1Fswwh1khz5+d8Cq/8yc/Mn0i+rQXduu8hcrFKvO7Eryk+09NecTQAAQ==",
+      "version": "18.1.3",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-18.1.3.tgz",
+      "integrity": "sha512-o50j0JeToy/4K6OZcaQmW6lyXXKhq7csREXcDwk2omFPJEwUNOVtJKvmDr9EI1fAJZUyZcRF7kxGBWmRXudrCQ==",
       "dev": true,
       "requires": {
         "camelcase": "^5.0.0",
diff --git a/package.json b/package.json
index f6d238f3..a0670583 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "vanilla-lazyload",
-    "version": "16.0.0",
+    "version": "16.1.0",
     "description": "LazyLoad is a lightweight and flexible script that speeds up your web application by deferring the loading of your below-the-fold images, videos and iframes to when they will enter the viewport. It's written in plain \"vanilla\" JavaScript, it leverages the IntersectionObserver API, it supports responsive images and enables native lazy loading.",
     "main": "dist/lazyload.min.js",
     "module": "dist/lazyload.esm.js",
@@ -8,11 +8,11 @@
     "typings": "typings/lazyload.d.ts",
     "dependencies": {},
     "devDependencies": {
-        "@babel/core": "^7.9.0",
+        "@babel/core": "^7.9.6",
         "@babel/plugin-transform-object-assign": "^7.8.3",
-        "@babel/preset-env": "^7.9.0",
-        "@rollup/plugin-node-resolve": "^7.1.1",
-        "jest": "^25.1.0",
+        "@babel/preset-env": "^7.9.6",
+        "@rollup/plugin-node-resolve": "^7.1.3",
+        "jest": "^25.5.4",
         "rollup": "^1.32.1",
         "rollup-plugin-babel": "^4.4.0",
         "rollup-plugin-terser": "^5.3.0"
diff --git a/rollup.config.js b/rollup.config.js
index 8af69f04..bd0043b1 100644
--- a/rollup.config.js
+++ b/rollup.config.js
@@ -2,6 +2,12 @@ import { terser } from "rollup-plugin-terser";
 import resolve from "@rollup/plugin-node-resolve";
 import babel from "rollup-plugin-babel";
 
+const terserOptions = {
+    compress: {
+        passes: 2
+    }
+};
+
 module.exports = [
     {
         input: "src/lazyload.js",
@@ -13,7 +19,7 @@ module.exports = [
             {
                 file: "dist/lazyload.amd.min.js",
                 format: "amd",
-                plugins: [terser()]
+                plugins: [terser(terserOptions)]
             },
 
             {
@@ -25,7 +31,7 @@ module.exports = [
                 file: "dist/lazyload.iife.min.js",
                 name: "LazyLoad",
                 format: "iife",
-                plugins: [terser()]
+                plugins: [terser(terserOptions)]
             },
             {
                 file: "dist/lazyload.js",
@@ -36,7 +42,7 @@ module.exports = [
                 file: "dist/lazyload.min.js",
                 name: "LazyLoad",
                 format: "umd",
-                plugins: [terser()]
+                plugins: [terser(terserOptions)]
             }
         ],
         plugins: [
@@ -56,7 +62,7 @@ module.exports = [
             {
                 file: "dist/lazyload.esm.min.js",
                 format: "esm",
-                plugins: [terser()]
+                plugins: [terser(terserOptions)]
             }
         ]
     }
diff --git a/src/lazyload.cancelOnExit.js b/src/lazyload.cancelOnExit.js
index 71131b32..5733ea07 100644
--- a/src/lazyload.cancelOnExit.js
+++ b/src/lazyload.cancelOnExit.js
@@ -1,27 +1,19 @@
 import { removeEventListeners } from "./lazyload.event";
-import {
-	resetSourcesImg,
-	restoreOriginalAttributesImg
-} from "./lazyload.setSources";
+import { resetSourcesImg, restoreOriginalAttributesImg } from "./lazyload.setSources";
 import { safeCallback } from "./lazyload.callback";
 import { removeClass } from "./lazyload.class";
 import { updateLoadingCount } from "./lazyload.counters";
-import { resetStatus } from "./lazyload.data";
+import { resetStatus, hasStatusLoading } from "./lazyload.data";
 
-export const cancelIfLoading = (element, entry, settings, instance) => {
-	if (element.tagName !== "IMG") {
-		// Can't cancel loading on anything but images
-		return;
-	}
-	removeEventListeners(element);
-	resetSourcesImg(element, settings, instance);
-	restoreOriginalAttributesImg(element);
-	removeClass(element, settings.class_loading);
-	updateLoadingCount(instance, -1);
-	safeCallback(settings.callback_cancel, element, entry, instance);
-	// setTimeout is needed because the "callback_cancel" implementation
-	// could be out of the main thread, e.g. `img.setAttribute("src", "")`
-	setTimeout(() => {
-		resetStatus(element);
-	}, 0);
+export const cancelLoadingIfRequired = (element, entry, settings, instance) => {
+    if (!settings.cancel_on_exit) return;
+    if (!hasStatusLoading(element)) return;
+    if (element.tagName !== "IMG") return; //Works only on images
+    removeEventListeners(element);
+    resetSourcesImg(element, settings, instance);
+    restoreOriginalAttributesImg(element);
+    removeClass(element, settings.class_loading);
+    updateLoadingCount(instance, -1);
+    resetStatus(element);
+    safeCallback(settings.callback_cancel, element, entry, instance);
 };
diff --git a/src/lazyload.data.js b/src/lazyload.data.js
index e84e3eb2..5d358b49 100644
--- a/src/lazyload.data.js
+++ b/src/lazyload.data.js
@@ -1,4 +1,4 @@
-import { statusError, statusLoading, statusLoaded, statusApplied } from "./lazyload.elementStatus";
+import { statusError, statusLoading, statusNative } from "./lazyload.elementStatus";
 
 const dataPrefix = "data-";
 const statusDataName = "ll-status";
@@ -23,7 +23,5 @@ export const resetStatus = (element) => setStatus(element, null);
 export const hasEmptyStatus = (element) => getStatus(element) === null;
 export const hasStatusLoading = (element) => getStatus(element) === statusLoading;
 export const hasStatusError = (element) => getStatus(element) === statusError;
-
-const statusesAfterLoading = [statusLoading, statusApplied, statusLoaded, statusError];
-export const hasStatusAfterLoading = (element) =>
-    statusesAfterLoading.indexOf(getStatus(element)) > -1;
\ No newline at end of file
+export const hasStatusNative = (element) => getStatus(element) === statusNative;
+export const hadStartedLoading = (element) => !hasEmptyStatus(element);
diff --git a/src/lazyload.defaults.js b/src/lazyload.defaults.js
index e286b803..124bcda8 100644
--- a/src/lazyload.defaults.js
+++ b/src/lazyload.defaults.js
@@ -1,7 +1,7 @@
 import { isBot, runningOnBrowser } from "./lazyload.environment";
 
 const defaultSettings = {
-    elements_selector: "img",
+    elements_selector: "IMG",
     container: isBot || runningOnBrowser ? document : null,
     threshold: 300,
     thresholds: null,
@@ -31,6 +31,6 @@ const defaultSettings = {
     use_native: false
 };
 
-export const getExtendedSettings = customSettings => {
+export const getExtendedSettings = (customSettings) => {
     return Object.assign({}, defaultSettings, customSettings);
 };
diff --git a/src/lazyload.elementStatus.js b/src/lazyload.elementStatus.js
index e03f3e84..6155548c 100644
--- a/src/lazyload.elementStatus.js
+++ b/src/lazyload.elementStatus.js
@@ -2,4 +2,4 @@ export const statusLoading = "loading";
 export const statusLoaded = "loaded";
 export const statusApplied = "applied";
 export const statusError = "error";
-export const statusNative = "native";
\ No newline at end of file
+export const statusNative = "native";
diff --git a/src/lazyload.event.js b/src/lazyload.event.js
index 23f5d565..d05596c7 100644
--- a/src/lazyload.event.js
+++ b/src/lazyload.event.js
@@ -1,6 +1,6 @@
 import { addClass, removeClass } from "./lazyload.class";
 import { safeCallback } from "./lazyload.callback";
-import { setStatus } from "./lazyload.data";
+import { setStatus, hasStatusNative } from "./lazyload.data";
 import { statusLoaded, statusError } from "./lazyload.elementStatus";
 import { deleteTempImage, getTempImage } from "./lazyload.tempImage";
 import { unobserve } from "./lazyload.unobserve";
@@ -10,10 +10,7 @@ import {
     haveElementsToLoad,
     isSomethingLoading
 } from "./lazyload.counters";
-
-const genericLoadEventName = "load";
-const mediaLoadEventName = "loadeddata";
-const errorEventName = "error";
+import { removeDataAttributes } from "./lazyload.setSources";
 
 const elementsWithLoadEvent = ["IMG", "IFRAME", "VIDEO"];
 export const hasLoadEvent = (element) => elementsWithLoadEvent.indexOf(element.tagName) > -1;
@@ -39,11 +36,9 @@ export const hasEventListeners = (element) => {
 
 export const addEventListeners = (element, loadHandler, errorHandler) => {
     if (!hasEventListeners(element)) element.llEvLisnrs = {};
-    addEventListener(element, genericLoadEventName, loadHandler);
-    addEventListener(element, errorEventName, errorHandler);
-    if (element.tagName === "VIDEO") {
-        addEventListener(element, mediaLoadEventName, loadHandler);
-    }
+    const loadEventName = element.tagName === "VIDEO" ? "loadeddata" : "load";
+    addEventListener(element, loadEventName, loadHandler);
+    addEventListener(element, "error", errorHandler);
 };
 
 export const removeEventListeners = (element) => {
@@ -69,19 +64,22 @@ export const doneHandler = (element, settings, instance) => {
 };
 
 export const loadHandler = (event, element, settings, instance) => {
+    const goingNative = hasStatusNative(element);
     doneHandler(element, settings, instance);
     addClass(element, settings.class_loaded);
     setStatus(element, statusLoaded);
+    removeDataAttributes(element, settings);
     safeCallback(settings.callback_loaded, element, instance);
-    checkFinish(settings, instance);
+    if (!goingNative) checkFinish(settings, instance);
 };
 
 export const errorHandler = (event, element, settings, instance) => {
+    const goingNative = hasStatusNative(element);
     doneHandler(element, settings, instance);
     addClass(element, settings.class_error);
     setStatus(element, statusError);
     safeCallback(settings.callback_error, element, instance);
-    checkFinish(settings, instance);
+    if (!goingNative) checkFinish(settings, instance);
 };
 
 export const addOneShotEventListeners = (element, settings, instance) => {
diff --git a/src/lazyload.intersectionHandlers.js b/src/lazyload.intersectionHandlers.js
index 2c0b446c..ed2114f9 100644
--- a/src/lazyload.intersectionHandlers.js
+++ b/src/lazyload.intersectionHandlers.js
@@ -1,26 +1,18 @@
 import { safeCallback } from "./lazyload.callback";
 import { load } from "./lazyload.load";
-import { hasStatusAfterLoading, hasEmptyStatus, hasStatusLoading } from "./lazyload.data";
-import { cancelIfLoading } from "./lazyload.cancelOnExit";
-import { unobserve } from "./lazyload.unobserve";
+import { hasEmptyStatus, hadStartedLoading } from "./lazyload.data";
+import { cancelLoadingIfRequired } from "./lazyload.cancelOnExit";
+import { unobserveIfRequired } from "./lazyload.unobserve";
 
 export const onEnter = (element, entry, settings, instance) => {
     safeCallback(settings.callback_enter, element, entry, instance);
-    if (hasStatusAfterLoading(element)) {
-        return; //Prevent loading it again
-    }
-    if (settings.unobserve_entered) {
-        unobserve(element, instance);
-    }
+    unobserveIfRequired(element, settings, instance);
+    if (hadStartedLoading(element)) return; //Prevent loading it again
     load(element, settings, instance);
 };
 
 export const onExit = (element, entry, settings, instance) => {
-    if (hasEmptyStatus(element)) {
-        return; //Ignore the first pass, at landing
-    }
-    if (settings.cancel_on_exit && hasStatusLoading(element)) {
-        cancelIfLoading(element, entry, settings, instance);
-    }
+    if (hasEmptyStatus(element)) return; //Ignore the first pass, at landing
+    cancelLoadingIfRequired(element, entry, settings, instance);
     safeCallback(settings.callback_exit, element, entry, instance);
 };
diff --git a/src/lazyload.js b/src/lazyload.js
index 9c070678..d92aa702 100644
--- a/src/lazyload.js
+++ b/src/lazyload.js
@@ -5,7 +5,7 @@ import { setObserver, updateObserver } from "./lazyload.intersectionObserver";
 import { isBot, runningOnBrowser, supportsIntersectionObserver } from "./lazyload.environment";
 import { shouldUseNative, loadAllNative } from "./lazyload.native";
 import { setOnlineCheck } from "./lazyload.online";
-import { getElementsToLoad } from "./lazyload.dom";
+import { getElementsToLoad, queryElements } from "./lazyload.dom";
 import { resetStatus } from "./lazyload.data";
 import { setToLoadCount } from "./lazyload.counters";
 
@@ -41,6 +41,11 @@ LazyLoad.prototype = {
         if (this._observer) {
             this._observer.disconnect();
         }
+        // Clean custom attributes on elements
+        queryElements(this._settings).forEach((element) => {
+            delete element.llOriginalAttrs;
+        });
+        // Delete all internal props
         delete this._observer;
         delete this._settings;
         delete this.loadingCount;
diff --git a/src/lazyload.load.js b/src/lazyload.load.js
index c35aa1fc..2a2e57e4 100644
--- a/src/lazyload.load.js
+++ b/src/lazyload.load.js
@@ -1,4 +1,10 @@
-import { setSources, setBackground, setMultiBackground } from "./lazyload.setSources";
+import {
+    setSources,
+    setBackground,
+    setMultiBackground,
+    removeDataAttributes,
+    manageLoading
+} from "./lazyload.setSources";
 import { setStatus } from "./lazyload.data";
 import { addOneShotEventListeners, checkFinish, hasLoadEvent } from "./lazyload.event";
 import { statusNative } from "./lazyload.elementStatus";
@@ -14,6 +20,7 @@ const loadBackground = (element, settings, instance) => {
 const loadRegular = (element, settings, instance) => {
     addOneShotEventListeners(element, settings, instance);
     setSources(element, settings, instance);
+    manageLoading(element, settings, instance);
 };
 
 export const load = (element, settings, instance) => {
@@ -22,12 +29,11 @@ export const load = (element, settings, instance) => {
     } else {
         loadBackground(element, settings, instance);
     }
-    checkFinish(settings, instance);
 };
 
 export const loadNative = (element, settings, instance) => {
     addOneShotEventListeners(element, settings, instance);
     setSources(element, settings, instance);
+    removeDataAttributes(element, settings);
     setStatus(element, statusNative);
-    checkFinish(settings, instance);
 };
diff --git a/src/lazyload.native.js b/src/lazyload.native.js
index 845912c0..29a4d338 100644
--- a/src/lazyload.native.js
+++ b/src/lazyload.native.js
@@ -1,18 +1,17 @@
 import { loadNative } from "./lazyload.load";
 import { setToLoadCount } from "./lazyload.counters";
 
-const nativeLazyTags = ["IMG", "IFRAME"];
-const loadingString = "loading";
+const tagsWithNativeLazy = ["IMG", "IFRAME"];
 
-export const shouldUseNative = settings =>
-    settings.use_native && loadingString in HTMLImageElement.prototype;
+export const shouldUseNative = (settings) =>
+    settings.use_native && "loading" in HTMLImageElement.prototype;
 
 export const loadAllNative = (elements, settings, instance) => {
-    elements.forEach(element => {
-        if (nativeLazyTags.indexOf(element.tagName) === -1) {
+    elements.forEach((element) => {
+        if (tagsWithNativeLazy.indexOf(element.tagName) === -1) {
             return;
         }
-        element.setAttribute(loadingString, "lazy"); //TODO: Move inside the loadNative method
+        element.setAttribute("loading", "lazy"); //TODO: Move inside the loadNative method
         loadNative(element, settings, instance);
     });
     setToLoadCount(instance, 0);
diff --git a/src/lazyload.setSources.js b/src/lazyload.setSources.js
index 60dbff09..f5cf8e26 100644
--- a/src/lazyload.setSources.js
+++ b/src/lazyload.setSources.js
@@ -1,4 +1,4 @@
-import { getData, setStatus } from "./lazyload.data";
+import { getData, setData, setStatus } from "./lazyload.data";
 import { statusLoading, statusApplied } from "./lazyload.elementStatus";
 import { safeCallback } from "./lazyload.callback";
 import { addClass } from "./lazyload.class";
@@ -7,12 +7,6 @@ import { isHiDpi } from "./lazyload.environment";
 import { unobserve } from "./lazyload.unobserve";
 import { updateLoadingCount } from "./lazyload.counters";
 
-const _src_ = "src";
-const _srcset_ = "srcset";
-const _sizes_ = "sizes";
-const _poster_ = "poster";
-const _PICTURE_ = "PICTURE";
-
 export const getSourceTags = (parentTag) => {
     let sourceTags = [];
     for (let i = 0, childTag; (childTag = parentTag.children[i]); i += 1) {
@@ -43,9 +37,9 @@ export const saveOriginalImageAttributes = (element) => {
         return;
     }
     const originalAttributes = {};
-    originalAttributes[_src_] = element.getAttribute(_src_);
-    originalAttributes[_srcset_] = element.getAttribute(_srcset_);
-    originalAttributes[_sizes_] = element.getAttribute(_sizes_);
+    originalAttributes["src"] = element.getAttribute("src");
+    originalAttributes["srcset"] = element.getAttribute("srcset");
+    originalAttributes["sizes"] = element.getAttribute("sizes");
     element.llOriginalAttrs = originalAttributes;
 };
 
@@ -54,32 +48,37 @@ export const restoreOriginalImageAttributes = (element) => {
         return;
     }
     const originalAttributes = element.llOriginalAttrs;
-    setAttributeIfValue(element, _src_, originalAttributes[_src_]);
-    setAttributeIfValue(element, _srcset_, originalAttributes[_srcset_]);
-    setAttributeIfValue(element, _sizes_, originalAttributes[_sizes_]);
+    setAttributeIfValue(element, "src", originalAttributes["src"]);
+    setAttributeIfValue(element, "srcset", originalAttributes["srcset"]);
+    setAttributeIfValue(element, "sizes", originalAttributes["sizes"]);
 };
 
 export const setImageAttributes = (element, settings) => {
-    setAttributeIfValue(element, _sizes_, getData(element, settings.data_sizes));
-    setAttributeIfValue(element, _srcset_, getData(element, settings.data_srcset));
-    setAttributeIfValue(element, _src_, getData(element, settings.data_src));
+    setAttributeIfValue(element, "sizes", getData(element, settings.data_sizes));
+    setAttributeIfValue(element, "srcset", getData(element, settings.data_srcset));
+    setAttributeIfValue(element, "src", getData(element, settings.data_src));
 };
 
 export const resetImageAttributes = (element) => {
-    resetAttribute(element, _src_);
-    resetAttribute(element, _srcset_);
-    resetAttribute(element, _sizes_);
+    resetAttribute(element, "src");
+    resetAttribute(element, "srcset");
+    resetAttribute(element, "sizes");
 };
 
 export const forEachPictureSource = (element, fn) => {
     const parent = element.parentNode;
-    if (!parent || parent.tagName !== _PICTURE_) {
+    if (!parent || parent.tagName !== "PICTURE") {
         return;
     }
     let sourceTags = getSourceTags(parent);
     sourceTags.forEach(fn);
 };
 
+export const forEachVideoSource = (element, fn) => {
+    let sourceTags = getSourceTags(element);
+    sourceTags.forEach(fn);
+};
+
 export const restoreOriginalAttributesImg = (element) => {
     forEachPictureSource(element, (sourceTag) => {
         restoreOriginalImageAttributes(sourceTag);
@@ -104,29 +103,28 @@ export const resetSourcesImg = (element) => {
 };
 
 export const setSourcesIframe = (element, settings) => {
-    setAttributeIfValue(element, _src_, getData(element, settings.data_src));
+    setAttributeIfValue(element, "src", getData(element, settings.data_src));
 };
 
 export const resetSourcesIframe = (element) => {
-    resetAttribute(element, _src_);
+    resetAttribute(element, "src");
 };
 
 export const setSourcesVideo = (element, settings) => {
-    let sourceTags = getSourceTags(element);
-    sourceTags.forEach((sourceTag) => {
-        setAttributeIfValue(sourceTag, _src_, getData(sourceTag, settings.data_src));
+    forEachVideoSource(element, (sourceTag) => {
+        setAttributeIfValue(sourceTag, "src", getData(sourceTag, settings.data_src));
     });
-    setAttributeIfValue(element, _poster_, getData(element, settings.data_poster));
-    setAttributeIfValue(element, _src_, getData(element, settings.data_src));
+    setAttributeIfValue(element, "poster", getData(element, settings.data_poster));
+    setAttributeIfValue(element, "src", getData(element, settings.data_src));
     element.load();
 };
 
 export const resetSourcesVideo = (element) => {
     let sourceTags = getSourceTags(element);
-    resetAttribute(element, _src_);
-    resetAttribute(element, _poster_);
+    resetAttribute(element, "src");
+    resetAttribute(element, "poster");
     sourceTags.forEach((sourceTag) => {
-        resetAttribute(sourceTag, _src_);
+        resetAttribute(sourceTag, "src");
     });
 };
 
@@ -142,12 +140,8 @@ export const setBackground = (element, settings, instance) => {
     const bgDataValue = isHiDpi && bgHiDpiValue ? bgHiDpiValue : bg1xValue;
     if (!bgDataValue) return;
     element.style.backgroundImage = `url("${bgDataValue}")`;
-    getTempImage(element).setAttribute(_src_, bgDataValue);
-    // Annotate and notify loading
-    updateLoadingCount(instance, +1);
-    addClass(element, settings.class_loading);
-    setStatus(element, statusLoading);
-    safeCallback(settings.callback_loading, element, instance);
+    getTempImage(element).setAttribute("src", bgDataValue);
+    manageLoading(element, settings, instance);
 };
 
 // NOTE: THE TEMP IMAGE TRICK CANNOT BE DONE WITH data-multi-bg
@@ -161,25 +155,80 @@ export const setMultiBackground = (element, settings, instance) => {
         return;
     }
     element.style.backgroundImage = bgDataValue;
-    // Annotate and notify applied
+    manageApplied(element, settings, instance);
+};
+
+export const setSources = (element, settings) => {
+    const setSourcesFunction = setSourcesFunctions[element.tagName];
+    if (!setSourcesFunction) {
+        return;
+    }
+    setSourcesFunction(element, settings);
+};
+
+export const manageApplied = (element, settings, instance) => {
     addClass(element, settings.class_applied);
     setStatus(element, statusApplied);
-    safeCallback(settings.callback_applied, element, instance);
+    removeDataMultiBackground(element, settings);
     if (settings.unobserve_completed) {
         // Unobserve now because we can't do it on load
         unobserve(element, settings, instance);
     }
+    safeCallback(settings.callback_applied, element, instance);
 };
 
-export const setSources = (element, settings, instance) => {
-    const setSourcesFunction = setSourcesFunctions[element.tagName];
-    if (!setSourcesFunction) {
-        return;
-    }
-    setSourcesFunction(element, settings);
-    // Annotate and notify loading
+export const manageLoading = (element, settings, instance) => {
     updateLoadingCount(instance, +1);
     addClass(element, settings.class_loading);
     setStatus(element, statusLoading);
     safeCallback(settings.callback_loading, element, instance);
 };
+
+// REMOVE DATA ATTRIBUTES --------------
+
+export const removeDataImg = (element, settings) => {
+    setData(element, settings.data_src, null);
+    setData(element, settings.data_srcset, null);
+    setData(element, settings.data_sizes, null);
+    forEachPictureSource(element, (sourceTag) => {
+        setData(sourceTag, settings.data_srcset, null);
+        setData(sourceTag, settings.data_sizes, null);
+    });
+};
+
+export const removeDataIframe = (element, settings) => {
+    setData(element, settings.data_src, null);
+};
+
+export const removeDataVideo = (element, settings) => {
+    setData(element, settings.data_src, null);
+    setData(element, settings.data_poster, null);
+    forEachVideoSource(element, (sourceTag) => {
+        setData(sourceTag, settings.data_src, null);
+    });
+};
+
+const removeDataFunctions = {
+    IMG: removeDataImg,
+    IFRAME: removeDataIframe,
+    VIDEO: removeDataVideo
+};
+
+export const removeDataBackground = (element, settings) => {
+    setData(element, settings.data_bg, null);
+    setData(element, settings.data_bg_hidpi, null);
+};
+
+export const removeDataMultiBackground = (element, settings) => {
+    setData(element, settings.data_bg_multi, null);
+    setData(element, settings.data_bg_multi_hidpi, null);
+};
+
+export const removeDataAttributes = (element, settings) => {
+    const removeDataFunction = removeDataFunctions[element.tagName];
+    if (removeDataFunction) {
+        removeDataFunction(element, settings);
+        return;
+    }
+    removeDataBackground(element, settings);
+};
diff --git a/src/lazyload.tempImage.js b/src/lazyload.tempImage.js
index b9d84e69..575e061f 100644
--- a/src/lazyload.tempImage.js
+++ b/src/lazyload.tempImage.js
@@ -1,9 +1,9 @@
-export const addTempImage = element => {
-    element.llTempImage = document.createElement("img");
+export const addTempImage = (element) => {
+    element.llTempImage = document.createElement("IMG");
 };
 
-export const deleteTempImage = element => {
+export const deleteTempImage = (element) => {
     delete element.llTempImage;
 };
 
-export const getTempImage = element => element.llTempImage;
+export const getTempImage = (element) => element.llTempImage;
diff --git a/src/lazyload.unobserve.js b/src/lazyload.unobserve.js
index 72e9bc00..2f8cb150 100644
--- a/src/lazyload.unobserve.js
+++ b/src/lazyload.unobserve.js
@@ -7,4 +7,8 @@ export const unobserve = (element, instance) => {
 
 export const resetObserver = (observer) => {
     observer.disconnect();
-};
\ No newline at end of file
+};
+
+export const unobserveIfRequired = (element, settings, instance) => {
+    if (settings.unobserve_entered) unobserve(element, instance);
+}
\ No newline at end of file
diff --git a/todo.md b/todo.md
index 642e4876..232e8cdd 100644
--- a/todo.md
+++ b/todo.md
@@ -2,13 +2,9 @@
 
 ## Coming next
 
--   Update the `destroy` method so it also removes lazyload's modifications to DOM elements (`element.llStatus` and `element.llTimeout`)
--   Use `requestAnimationFrame` before resetting the sources and calling the callbacks? See lazysizes.
--   Consider not using the `load` event listener for videos.
 -   Consider creating a subset of options and defaults for the static `load` method, and document it
--   DRY the `// Annotate and notify loading` part in `lazyload.setSources`
--   Release a new beta major with `cancel_on_exit` defaulting to `true`
 -   When `cancel_on_exit` is `false`, unobserve elements as soon as they start loading (as of before 15.2.0).
+-   Release a new beta major with `cancel_on_exit` defaulting to `true`
 -   Check how LazyLoad behaves when a page was updated using DOM morphing.
     If only the data-attributes were updated, how do one forces LazyLoad to read from them again?
 -   Check out how the plugin architecture of lazysizes work