I don’t think it’s a joke, though it’s not universal, but many services probably either don’t process the image, or use libraries that support webp, and naively limit formats before feeding them in - in those cases, renaming the file can bypass those crappy filters, and other software will probably figure out the filetype based on the actual data.
Simply rename the file from “file.webp” to “file.png” and it’ll work fine. No need to convert anything.
Hah! you got me, I actually tried it…
I don’t think it’s a joke, though it’s not universal, but many services probably either don’t process the image, or use libraries that support webp, and naively limit formats before feeding them in - in those cases, renaming the file can bypass those crappy filters, and other software will probably figure out the filetype based on the actual data.