I've just tried krita-4.0.0-beta1.1-x86_64.appimage running on Debian 9 and I scribbled something in a layer and tried to save as a .gif file. It gave me a warning that the image would be flattened before saving, which I acknowledged of course, and then it seemed to save it. However, the saved .gif file was zero bytes in size.
Git commit a4cef6af0d8cb6ff0920227fd578933d1e878652 by Boudewijn Rempt. Committed on 20/02/2018 at 09:48. Pushed by rempt into branch 'master'. Add saving and loading of GIF files This re-uses Shawn Rutledge's gif qimageio plugin (https://github.com/ec1oud/qt-gif-plugin) and adds an optional dependency on giflib. In the future, we could extend this to save layers as frames and stuff like that, but for now, it simply saves the projection. M +2 -0 3rdparty/CMakeLists.txt A +26 -0 3rdparty/ext_giflib/CMakeLists.txt A +706 -0 3rdparty/ext_giflib/giflib-5.0.5-20130916.diff M +7 -0 CMakeLists.txt M +4 -1 plugins/impex/CMakeLists.txt A +26 -0 plugins/impex/gif/CMakeLists.txt A +76 -0 plugins/impex/gif/kis_gif_export.cpp [License: GPL (v2+)] A +38 -0 plugins/impex/gif/kis_gif_export.h [License: GPL (v2+)] A +84 -0 plugins/impex/gif/kis_gif_import.cpp [License: GPL (v2+)] A +37 -0 plugins/impex/gif/kis_gif_import.h [License: GPL (v2+)] A +71 -0 plugins/impex/gif/krita_gif.desktop A +13 -0 plugins/impex/gif/krita_gif_export.json A +13 -0 plugins/impex/gif/krita_gif_import.json A +364 -0 plugins/impex/gif/qgiflibhandler.cpp [License: GPL (v2+)] A +42 -0 plugins/impex/gif/qgiflibhandler.h [License: GPL (v2+)] https://commits.kde.org/krita/a4cef6af0d8cb6ff0920227fd578933d1e878652