I just opened my website on Firefox and for my surprise, I discovered that the CSS image-rendering: pixelated works on almost all modern browsers, except… for Firefox. See for yourself:

https://developer.mozilla.org/en-US/docs/Web/CSS/image-rendering#browser_compatibility

I’m sorry if you visit my website on Firefox, but almost all my GIFs will be blurry 😭

Edit: just discovered FF supports crisp-edges instead. Should fix it for now!