Pause animated GIFs
Freezes animated GIFs by rendering their first frame as a static image to reduce distraction.
Code to copy
// Freeze animated GIFs by drawing their first frame onto a static canvas.
function freezeGifs() {
document.querySelectorAll('img[src$=".gif" i]').forEach(function (img) {
if (img.dataset.jzFrozen) return;
if (!img.complete || !img.naturalWidth) {
img.addEventListener('load', freezeGifs, { once: true });
return;
}
try {
var c = document.createElement('canvas');
c.width = img.naturalWidth;
c.height = img.naturalHeight;
c.getContext('2d').drawImage(img, 0, 0);
img.src = c.toDataURL('image/png');
img.dataset.jzFrozen = '1';
} catch (e) {}
});
}
freezeGifs();How to use this example
- Copy the code with the button above.
- Install JustZix (2 minutes) and open the extension on the target page.
- Add a new rule matching that page.
- Paste the code into the rule's JavaScript panel and save — it runs on every page visit.
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