A guide for installing thegThumb image viewer and organizer on Ubuntu 20.04 LTS or 22.04 LTS was published by Unixcop.

How To Install gThumb on Ubuntu 20.04 | 22.04 LTS

In this small guide, we will show you how to install gThumb on Ubuntu systems. gThumb is a free and open-source image viewer and image organizer with options to edit images. It is designed to have a clean and simple user interface and follows GNOME HIG, it integrates well with the GNOME desktop environment.

How To Install gThumb on Ubuntu 20.04 | 22.04 LTS - Unix / Linux the admins Tutorials