[bluecatswim]

How? Of course asking OP to add features for a site he offers for free is wrong, but I don't think he's wrong about gif. As far as I know all the "gif" sharing sites like giphy and stickers in chat apps like discord, etc actually use webms/webps.

[egfx]

Gif is simply the most versatile format on the face of the planet. When you go down the rabbit hole you’ll discover this too.

[Mossly]

Twitter for instance automatically converts gif to h264.

However there is a point to be made that iOS only grants VP9 decoding to Youtube, certain colourspaces fail to decode on Android etc. ergo gif is a safe default.