Created attachment 124297 [details] Tested with this file, opens correctly in Chrome and Firefox SUMMARY Gwenview cannot open files in .webp format, and shows this message: "Loading ‘1.webp’ failed Gwenview cannot display documents of type image/webp."
Works fine for me in Gwenview on openSUSE Tumbleweed with Qt 5.13.1. Could be a Qt regression if you're using 5.14 maybe, or a packaging issue on Arch. Either way, can you report this to the Arch packagers? Thanks!
(In reply to Nate Graham from comment #1) > Works fine for me in Gwenview on openSUSE Tumbleweed with Qt 5.13.1. Could > be a Qt regression if you're using 5.14 maybe, or a packaging issue on Arch. > Either way, can you report this to the Arch packagers? Thanks! OK, done (https://bugs.archlinux.org/task/64723), I am actually using Qt 5.14.
Get the equivalent of libqt5-qtimageformats package for arch linux. In opensuse if you disable recommended packages you hit the same problem since libqt5-qtimageformats is not a hard dependency on anything YET is the package that provides support for webp images as well as tiff and some others. Besides Gwnview, Dolphin can't preview webp either if the package is not installed.
For arch the needed package is : qt5-imageformats.
Thanks, I had solved it then.