Unixcop published an article showing you how to install Gwenview on Ubuntu 20.04.

How To Install Gwenview on Ubuntu 20.04

In this article, we will illustrate how to install Gwenview in Ubuntu systems Gwenview is an image viewer for Unix-like systems (including Linux) and is released as part of the KDE Applications bundle. The current maintainer is Aurélien Gâteau. The word “Gwen” means “white” in the Breton language and is commonly used as a first name. Gwenview is a fast and easy-to-use basic image viewer. 

How To Install Gwenview on Ubuntu 20.04 - Unix / Linux the admins Tutorials