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.
It’s a image format with extremely good compression that’s tiny doesn’t look bad. As someone who had shitty internet for years I definitely welcome them but as usual with Googles inventions they push it on to everyone and let other browsers catch up.