chromium/third_party/blink/manual_tests/animated-gif-looping.html

<html>
<body>
<div>
    <img src="./resources/animated-infinite.gif">
    <p>This should animate.</p>
</div>
<div>
    <img src="./resources/non-animated.gif">
    <p>This should not animate and you should see a cross.</p>
</div
<div>
    <img src="./resources/animated-2x.gif">
    <p>This animation should loop 2 times.</p>
</div
<div>
    <img src="./resources/animated-10x.gif">
    <p>This animation should loop 10 times.</p>
</div
</body>
</html>