Nomacs is a free and open source image viewer application for Windows, Linux, and macOS. It is released under GNU General Public License v3.0. Using Nomacs, you can view the image and some other details like thumbnails, metadata, histogram, file history and more. It comes with file explorer, console, image editing features like resize, rotate, background color, flip, invert image, make image grey scale, sharpen the image, crop image and more.
How to install Nomacs on Ubuntu
Nomacs is available as a flatpak package file and from the Ubuntu universe repository . Open the terminal software (ctrl+alt+t) and run below Nomacs apt install command.
sudo apt install nomacs -y
After the installation you can open it using below command or via show applications menu.
And also uninstall Nomacs using this command.
sudo apt remove nomacs
Install Nomacs via Flatpak:
First install the flatpak and flathub on your system and restart it after the installation.
After that open the terminal app and run below Nomacs flatpak install command. It will install the latest version of Nomacs on your system
flatpak install flathub org.nomacs.ImageLounge
And open Nomacs using below command.
flatpak run org.nomacs.ImageLounge
And uninstall Nomacs using below commands.
flatpak uninstall org.nomacs.ImageLounge
sudo flatpak uninstall org.nomacs.ImageLounge