How to install Nomacs on Ubuntu 20.04 – A Image Viewer for Linux

A free and open-source image viewer that does not come baked with any fancy features. The user interface(UI) is very simple but it does offer some essential features for image adjustment (color, resize, brightness, crop, & cut). You can use it for viewing all common image formats including RAW and psd images.

In addition to that, it also supports fullscreen mode, histogram, and a lot of different panels that you can toggle for metadata, edit history, and more such information. It’s an cross platform application available for Microsoft Windows, Linux, FreeBSD.

It is able to browse images in zip or MS Office files which can be extracted to a directory. It has a pseudo color function which allows creating false color images.

A unique feature of nomacs is the synchronization of multiple instances. With this feature you can easily compare images by zooming and/or panning at the exactly same position or even by overlaying them with different opacity.

Key Features of Nomacs

  • Simple & Fast UI
  • Geolocation of the image
  • LAN Synchronization
  • Image adjustment tools (color & size)
  • Metadata information panel
  • Fullscreen mode

Installing Nomacs from Ubuntu apt repository

Nomacs is included in Ubuntu 20.04. Follow the step by step guide to install the application.

Step #1

Type the following command to update the apt sources.

$ sudo apt update

Step #2

Now execute this command to install the Nomacs package.

$ sudo apt install nomacs

With the help of && you can write both the commands in a single line. Something like this:

$ sudo apt update && sudo apt install nomacs

At this step, you have successfully installed Nomacs on Ubuntu 20.04 system.

If you are not comfortable with the command line, open Ubuntu Software, search for “Nomacs” and install the application.

Starting Nomacs

Nomacs can be launched from the command line by typing nomacs or In the Activities search bar type “Nomacs” and click on the icon.

Nomacs User Interface:

How to Uninstall Nomacs from Ubuntu 20.04

For some reason, If you want to uninstall Nomacs, type the following command.

$ sudo apt remove nomacs


I hope that now you have a good understanding of How to install Nomacs on Ubuntu 20.04 LTS Focal Fossa.

If anyone does have any questions about what we covered in this guide then feel free to ask in the comment section below and I will do my best to answer those.

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