Gwenview 4.14.0 pre in KDE 4.14.18 can't open webp images that Chromium/Chrome and Krita can show without problems. Reproducible: Always Steps to Reproduce: 1.Click on a webp image 2.Gwenview show a message saying "Loading ‘image_001.webp’ failed Gwenview cannot display documents of type image/webp." Actual Results: Can't see any webp image Expected Results: To show the image
Created attachment 98653 [details] An webp file example
Gwenview 17.04.0 with KDE Frameworks 5.33.0 and Qt 5.8.0 also can not open webp with Gwenview. There is/was a library "/usr/lib/kde4/plugins/imageformats/kimg_webp.so" but there is no library for webp in "/usr/lib/qt/plugins/imageformats/". Even the KImageFormats plugin for QImage does not include this format. So it seems to me that there is just no support for webp in Qt 5.
(In reply to David Matscheko from comment #2) > Gwenview 17.04.0 with KDE Frameworks 5.33.0 and Qt 5.8.0 also can not open > webp with Gwenview. > > There is/was a library "/usr/lib/kde4/plugins/imageformats/kimg_webp.so" but > there is no library for webp in "/usr/lib/qt/plugins/imageformats/". > > Even the KImageFormats plugin for QImage does not include this format. > > So it seems to me that there is just no support for webp in Qt 5. You need to install qtimageformats
(In reply to Antonio Rojas from comment #3) > (In reply to David Matscheko from comment #2) > > [...] > > Even the KImageFormats plugin for QImage does not include this format. > > > > So it seems to me that there is just no support for webp in Qt 5. > > You need to install qtimageformats Thanks a lot. I totally missed that qtimageformats and kimageformats are not the same packages and thought it could be related to this bug report.
Sounds like this should be reported to your distro, asking them to mark qtimageformats as a required dependency of Gwenview.