Unixcop published a tutorial about installing Ristretto on Ubuntu 20.04 or 22.04 LTS.

How To Install Ristretto on Ubuntu 20.04 | 22.04 LTS

In this guide, we will show you how to install Ristretto on Ubuntu systems. The Ristretto Image Viewer is an application that can be used to view, and scroll through images. It can be used to run a slideshow of images, open images with other applications like an image-editor or configure an image.

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