Install kdesdk-thumbnailers by entering the following commands in the terminal:
sudo apt update sudo apt install kdesdk-thumbnailers
Description:
kdesdk file format thumbnailers for KDE
It contains a plugin to allow KDE software to create thumbnails for Gettext translations files (po). . This package is part of the KDE Software Development Kit module.
Homepage: http://www.kde.org/
Version: 4:17.12.3-0ubuntu1
Section: universe/devel