I am also having the same issue. The webpage refuses to load them.

Hi everyone! I checked with our engineering team, and it turns out this issue can occur when a GIF exceeds the size limit.

Figma supports GIFs up to 50 megapixels, calculated as: (width × height × number of frames) / 1,000,000 ≤ 50

If your GIF is over that limit, try reducing its size and uploading again. Hope this helps!

we need to bump that number up. a 1280x720 gif (for say our Hero bg) puts us at 921,000 before calculating any frames.

So either we need to bump that number up or add an autoplay+loop for .mp4 files

This supported size is ridiculously small, this basically makes any gif unusable in Figma Sites (unless it’s like a 2 seconds quick flicker, anything beyond that is bigger than what Figma supports)

For a product as big as Figma, this is unacceptable.