diff --git a/img/icon-r.png b/img/icon-r.png
deleted file mode 100644
index 990a587..0000000
Binary files a/img/icon-r.png and /dev/null differ
diff --git a/img/icon-r.webp b/img/icon-r.webp
index edd6589..ded2469 100644
Binary files a/img/icon-r.webp and b/img/icon-r.webp differ
diff --git a/img/icon-r_mini.png b/img/icon-r_mini.png
deleted file mode 100644
index 1a87a48..0000000
Binary files a/img/icon-r_mini.png and /dev/null differ
diff --git a/img/icon-r_mini.webp b/img/icon-r_mini.webp
new file mode 100644
index 0000000..48b75c6
Binary files /dev/null and b/img/icon-r_mini.webp differ
diff --git a/img/icon.webp b/img/icon.webp
index 9443fd7..c25ef97 100644
Binary files a/img/icon.webp and b/img/icon.webp differ
diff --git a/manifest.json b/manifest.json
index 02bb5b8..2d0221d 100644
--- a/manifest.json
+++ b/manifest.json
@@ -8,14 +8,14 @@
   "start_url": "/",
   "icons": [
       {
-        "src": "img/icon-r_mini.png",
+        "src": "img/icon-r_mini.webp",
         "sizes": "192x192",
-        "type": "image/png"
+        "type": "image/webp"
       },
       {
         "src": "img/icon-r.webp",
         "sizes": "512x512",
-        "type": "image/png"
+        "type": "image/webp"
       }
     ]
 }
\ No newline at end of file