A thumbnailer for Gnome 'File' (aka Nautilus) and Cinnamon 'Nemo' for KRA ( Krita native file ) and ORA ( open-raster ).
Get the "build essential" from your package manager, autogen, cmake, git ...etc...
Get the sources :
git clone https://github.com/Deevad/gnome-kra-ora-thumbnailer.git cd gnome-kra-ora-thumbnailer
Note : You can also download the source as a zip here : gnome-kra-ora-thumbnailer master.zip on Github
Configure, build and install :
./autogen.sh make sudo make install
Close all Nemo/Files/Nautilus.
Clean your old thumbnail cache :
rm -R ~/.cache/thumbnails
Re-open, check your *.kra files , and your *.ora files : should have thumbnail now.
- Don't forget in 'preferences' to allow thumbnail preview for files larger than 100MB ; those layered files tend to be large.