I don’t know what a .webp file is but I don’t like it. They’re like a filthy prank version of the image/gif you’re looking for. They make you jump through all these hoops to find the original versions of the files that you can actually do anything with.
funny enough, not true. try saving a video as mp4 but not too long and without sound (!) and it will be treated exactly like gifs on those platforms.
I tried it on these platforms:
sometimes afaik you could still have success renaming the file to .gif or .gifv I think? Telegram and Whatsapp should also work afaik.