Created attachment 891186 [details] emerge --info kde-apps/thumbnailers > emerge-info.txt For the longest time, I was stumped trying to figure out why I couldn't get PDF preview in Dolphin to work despite having kdegraphics-thumbnailers already. Today, out of desperation, I emerged kde-apps/okular which I previously did not have installed. Magically, PDF previews started working. I don't believe kdegraphics-thumbnailers actually depends on okular, but what is clear is that theres a missing RDEPEND. When I have time, I will try and trace down which dependency okular dragged in that fixed thumbnailers, or stare at the source code of thumbnailers I guess. Will reply to this thread then.