diff --git a/webdriver/tests/take_full_page_screenshot/__init__.py b/webdriver/tests/take_full_page_screenshot/__init__.py
new file mode 100644
index 00000000000000..8e9525541e239e
--- /dev/null
+++ b/webdriver/tests/take_full_page_screenshot/__init__.py
@@ -0,0 +1,14 @@
+def full_page_dimensions(session):
+    return tuple(session.execute_script("""
+        const {scrollWidth, scrollHeight} = document.scrollingElement;
+
+        return [
+            scrollWidth,
+            scrollHeight
+        ];
+        """))
+
+def take_full_page_screenshot(session):
+    return session.transport.send(
+        "GET", "session/{session_id}/screenshot/full".format(**vars(session)))
+
diff --git a/webdriver/tests/take_full_page_screenshot/iframe.py b/webdriver/tests/take_full_page_screenshot/iframe.py
new file mode 100644
index 00000000000000..9cd9c9ad68eb59
--- /dev/null
+++ b/webdriver/tests/take_full_page_screenshot/iframe.py
@@ -0,0 +1,95 @@
+import pytest
+import base64
+
+from tests.support.asserts import assert_success
+from tests.support.image import png_dimensions
+from tests.support.inline import iframe, inline
+
+from six import ensure_binary
+
+from . import full_page_dimensions
+from . import take_full_page_screenshot
+
+DEFAULT_CONTENT = "<div id='content'>Lorem ipsum dolor sit amet.</div>"
+
+REFERENCE_CONTENT = "<div id='outer'>{}</div>".format(DEFAULT_CONTENT)
+REFERENCE_STYLE = """
+    <style>
+      #outer {
+        display: block;
+        margin: 0;
+        border: 0;
+        width: 200px;
+        height: 200px;
+      }
+      #content {
+        display: block;
+        margin: 0;
+        border: 0;
+        width: 100px;
+        height: 100px;
+        background: green;
+      }
+    </style>
+"""
+
+OUTER_IFRAME_STYLE = """
+    <style>
+      iframe {
+        display: block;
+        margin: 0;
+        border: 0;
+        width: 200px;
+        height: 200px;
+      }
+    </style>
+"""
+
+INNER_IFRAME_STYLE = """
+    <style>
+      body {
+        margin: 0;
+      }
+      div {
+        display: block;
+        margin: 0;
+        border: 0;
+        width: 100px;
+        height: 100px;
+        background: green;
+      }
+    </style>
+"""
+
+def test_always_captures_top_browsing_context(session):
+    iframe_content = "{0}{1}".format(INNER_IFRAME_STYLE, DEFAULT_CONTENT)
+    session.url = inline("""{0}{1}""".format(OUTER_IFRAME_STYLE, iframe(iframe_content)))
+
+    response = take_full_page_screenshot(session)
+    reference_screenshot = assert_success(response)
+    assert png_dimensions(reference_screenshot) == full_page_dimensions(session)
+
+    frame = session.find.css("iframe", all=False)
+    session.switch_frame(frame)
+
+    response = take_full_page_screenshot(session)
+    screenshot = assert_success(response)
+
+    assert png_dimensions(screenshot) == png_dimensions(reference_screenshot)
+    assert screenshot == reference_screenshot
+
+@pytest.mark.parametrize("domain", ["", "alt"], ids=["same_origin", "cross_origin"])
+def test_source_origin(session, domain):
+    session.url = inline("{0}{1}".format(REFERENCE_STYLE, REFERENCE_CONTENT))
+
+    response = take_full_page_screenshot(session)
+    reference_screenshot = assert_success(response)
+    assert png_dimensions(reference_screenshot) == full_page_dimensions(session)
+
+    iframe_content = "{0}{1}".format(INNER_IFRAME_STYLE, DEFAULT_CONTENT)
+    session.url = inline("""{0}{1}""".format(
+        OUTER_IFRAME_STYLE, iframe(iframe_content, domain=domain)))
+
+    response = take_full_page_screenshot(session)
+    screenshot = assert_success(response)
+    assert png_dimensions(screenshot) == full_page_dimensions(session)
diff --git a/webdriver/tests/take_full_page_screenshot/screenshot.py b/webdriver/tests/take_full_page_screenshot/screenshot.py
new file mode 100644
index 00000000000000..cc2321f8a93cf7
--- /dev/null
+++ b/webdriver/tests/take_full_page_screenshot/screenshot.py
@@ -0,0 +1,41 @@
+
+from tests.support.asserts import assert_error, assert_png, assert_success
+from tests.support.image import png_dimensions
+from tests.support.inline import inline
+
+from . import full_page_dimensions
+from . import take_full_page_screenshot
+
+def test_no_top_browsing_context(session, closed_window):
+    response = take_full_page_screenshot(session)
+    assert_error(response, "no such window")
+
+
+def test_no_browsing_context(session, closed_frame):
+    session.url = inline("<input>")
+
+    response = take_full_page_screenshot(session)
+    value = assert_success(response)
+
+    assert_png(value)
+    assert png_dimensions(value) == full_page_dimensions(session)
+
+
+def test_format_and_dimensions(session):
+    session.url = inline("<input>")
+
+    response = take_full_page_screenshot(session)
+    value = assert_success(response)
+
+    assert_png(value)
+    assert png_dimensions(value) == full_page_dimensions(session)
+
+def test_large_page(session):
+    large_div = "<div id='content' style='height:5000px; width:5000px; background:green'>Lorem ipsum dolor sit amet.</div>"
+
+    session.url = inline(large_div)
+    response = take_full_page_screenshot(session)
+    value = assert_success(response)
+
+    assert_png(value)
+    assert png_dimensions(value) == full_page_dimensions(session)
diff --git a/webdriver/tests/take_full_page_screenshot/user_prompts.py b/webdriver/tests/take_full_page_screenshot/user_prompts.py
new file mode 100644
index 00000000000000..0b2578f75d026f
--- /dev/null
+++ b/webdriver/tests/take_full_page_screenshot/user_prompts.py
@@ -0,0 +1,110 @@
+# META: timeout=long
+
+import pytest
+
+from tests.support.asserts import assert_dialog_handled, assert_error, assert_png, assert_success
+from tests.support.inline import inline
+
+from . import take_full_page_screenshot
+
+@pytest.fixture
+def check_user_prompt_closed_without_exception(session, create_dialog):
+    def check_user_prompt_closed_without_exception(dialog_type, retval):
+        session.url = inline("<input/>")
+
+        create_dialog(dialog_type, text=dialog_type)
+
+        response = take_full_page_screenshot(session)
+        value = assert_success(response)
+
+        assert_dialog_handled(session, expected_text=dialog_type, expected_retval=retval)
+
+        assert_png(value)
+
+    return check_user_prompt_closed_without_exception
+
+
+@pytest.fixture
+def check_user_prompt_closed_with_exception(session, create_dialog):
+    def check_user_prompt_closed_with_exception(dialog_type, retval):
+        session.url = inline("<input/>")
+
+        create_dialog(dialog_type, text=dialog_type)
+
+        response = take_full_page_screenshot(session)
+        assert_error(response, "unexpected alert open")
+
+        assert_dialog_handled(session, expected_text=dialog_type, expected_retval=retval)
+
+    return check_user_prompt_closed_with_exception
+
+
+@pytest.fixture
+def check_user_prompt_not_closed_but_exception(session, create_dialog):
+    def check_user_prompt_not_closed_but_exception(dialog_type):
+        session.url = inline("<input/>")
+
+        create_dialog(dialog_type, text=dialog_type)
+
+        response = take_full_page_screenshot(session)
+        assert_error(response, "unexpected alert open")
+
+        assert session.alert.text == dialog_type
+        session.alert.dismiss()
+
+    return check_user_prompt_not_closed_but_exception
+
+
+@pytest.mark.capabilities({"unhandledPromptBehavior": "accept"})
+@pytest.mark.parametrize("dialog_type, retval", [
+    ("alert", None),
+    ("confirm", True),
+    ("prompt", ""),
+])
+def test_accept(check_user_prompt_closed_without_exception, dialog_type, retval):
+    check_user_prompt_closed_without_exception(dialog_type, retval)
+
+
+@pytest.mark.capabilities({"unhandledPromptBehavior": "accept and notify"})
+@pytest.mark.parametrize("dialog_type, retval", [
+    ("alert", None),
+    ("confirm", True),
+    ("prompt", ""),
+])
+def test_accept_and_notify(check_user_prompt_closed_with_exception, dialog_type, retval):
+    check_user_prompt_closed_with_exception(dialog_type, retval)
+
+
+@pytest.mark.capabilities({"unhandledPromptBehavior": "dismiss"})
+@pytest.mark.parametrize("dialog_type, retval", [
+    ("alert", None),
+    ("confirm", False),
+    ("prompt", None),
+])
+def test_dismiss(check_user_prompt_closed_without_exception, dialog_type, retval):
+    check_user_prompt_closed_without_exception(dialog_type, retval)
+
+
+@pytest.mark.capabilities({"unhandledPromptBehavior": "dismiss and notify"})
+@pytest.mark.parametrize("dialog_type, retval", [
+    ("alert", None),
+    ("confirm", False),
+    ("prompt", None),
+])
+def test_dismiss_and_notify(check_user_prompt_closed_with_exception, dialog_type, retval):
+    check_user_prompt_closed_with_exception(dialog_type, retval)
+
+
+@pytest.mark.capabilities({"unhandledPromptBehavior": "ignore"})
+@pytest.mark.parametrize("dialog_type", ["alert", "confirm", "prompt"])
+def test_ignore(check_user_prompt_not_closed_but_exception, dialog_type):
+    check_user_prompt_not_closed_but_exception(dialog_type)
+
+
+@pytest.mark.parametrize("dialog_type, retval", [
+    ("alert", None),
+    ("confirm", False),
+    ("prompt", None),
+])
+def test_default(check_user_prompt_closed_with_exception, dialog_type, retval):
+    check_user_prompt_closed_with_exception(dialog_type, retval)