Thread:Tigrouille/@comment-33126588-20190208161331/@comment-32271305-20190208195138

"I can't save some images as .PNG for some sites I use. (ex. any of the wikis on fandom.com) .WEBP images are completely useless to me - my version of Photoshop (CC 2018) can't even load them. It still saves as .WEBP even if the URL itself says it's a .PNG file [...]"

"[...] I found that removing "image/webp" from "network.http.accept.default" in the about:config page did solve the problem."

Source: https://support.mozilla.org/it/questions/1248840