How to make Viewnior your default image viewer in Debian 10

Viewnior is an image viewer application designed to be simple, fast and elegant. Its minimalistic interface provides more screen space for your images. Among its features:

  • Full Screen and Slideshows
  • Rotate, flip, crop, save, delete images
  • Animation support
  • View only selected images
  • Navigation window
  • Set image as wallpaper (under GNOME, Fluxbox and LXDE)
  • Simple interface
  • Custom mouse actions

So, if you are looking for a reliable alternative to the standard Eye of Gnome image viewer in Debian, then Viewnior is a wise choice. In this article, we will show you how to install Viewnoir on your Debian both using the command line and using the software manager. We will also tell you how to configure Debian to use Viewnior as the default image / photo viewer application.

We ran the commands and procedures mentioned in this article on the Debian 10 Buster system.

Install Viewnior via the command line

Viewnior is easily accessible through the official Debian repository and can be installed via the command line using the apt-get command.

Open the Terminal application by pressing the Super key (Windows) and searching the Application Launcher as follows:

The next step is to update the repository index of your system with the following command:

$ sudo apt-get update

Update Debian Package Lists

This will help you install the latest available software version from the Internet. Please note that only an authorized user can add, remove and configure software in Debian.

You are now ready to install Viewnior; You can do this by running the following command as sudo:

$ sudo apt-get install viewnior

Install Viewnior

The system may ask you to enter a password for sudo, as well as provide you with the option Y / n to continue the installation. Type Y, then press Enter; software will be installed on your system. However, the process may take some time depending on the speed of your internet.

You can check the version number of the application, and also make sure that it is actually installed on your system with the following command:

$ viewnior --version

Check out the version of Viewnior

Install Viewnior via the user interface

Alternatively, you can use the Debian Software Manager through the user interface to install Viewnior as follows:

On the Debian toolbar / action bar, click the Software icon.

Open the Ubuntu Software Installer

In the software manager, click the search icon, and then enter Viewnior in the search bar. Search results will contain relevant entries as follows:

Choose Viewnior Package

The Viewnior entry listed here is maintained in the Debian Stable Main repository. Click on this search entry to open the following view:

Install Viewnior

Click the Install button to start the installation process. An authentication dialog box opens in which you can specify your authentication information.

Authenticate as administrator

Please note that only an authorized user can add / remove and configure software in Debian. Enter your password and click the Authentication button. After that, the installation process will begin, displaying a progress bar as follows:

Software installation

After that, Viewnior will be installed on your system, and after successful installation you will receive the following message:

Launch Viewnior

In the above dialog box, you can directly launch Viewnior and even remove it immediately for any reason.

Launch Viewnior

You can launch the Viewnior application by entering the keywords “viewnior” in the search bar of the Application Launcher, as shown below:

Viewnior Icon

You can also use the following command in Terminal to launch the application:

$ viewnior

This is what Viewnior looks like when no image is open:

Image viewer

You can use the settings menu as shown above to open the image while viewing it.

As mentioned earlier, Eye of Gnome is the default image viewer for Debian. Therefore, whenever you open an image, it opens in the image viewer / EOG. In this case, if you want to open the image in Viewnior, right-click the image and select “Open with another application”, and then select “Viewnior” from the list of applications as follows:

Featured Apps

Make Viewnior your default image viewer

If you prefer Viewnior to the default image viewer, you can set it as the default photo viewer using the Settings utility. The easiest way to do this is to find the “default applications” in the Application Launcher as follows:

Default apps

When you open the specified result record, it will open the Settings utility in the Details> Default Applications view as follows:

Default Image Viewer

In the Photos drop-down list, select View, and it will now be used as the default photo viewer.

Install Viewnior as your default image viewer on your Debian GNOME desktop

After reading this article, you can easily install Viewnior on Debian in your preferred way. If you are satisfied with the application, you can set it as the default application instead of Eye of Gnome / Image Viewer.

How to make Viewnior your default image viewer in Debian 10