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.
My image viewer of choice will never implement it, they replied when I suggested, because the spec isn’t standardized. And because they consider themselves photography viewer/editor, not an image viewer. Understandable.
Im using it because it got the best tag manager/tag browser, not for the photo features.