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How To Install Okular on Ubuntu 20.04 LTS

Install Okular on Ubuntu 20.04

In this tutorial, we will show you how to install Okular on Ubuntu 20.04 LTS. For those of you who didn’t know, Okular is a universal document viewer developed by KDE. Okular allows you to read PDF documents, comics, and EPub books, browse images, visualize Markdown documents, and much more.

This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the Okular Document Viewer on Ubuntu 20.04 (Focal Fossa). You can follow the same instructions for Ubuntu 18.04, 16.04, and any other Debian-based distribution like Linux Mint.


  • A server running one of the following operating systems: Ubuntu 20.04, 18.04, 16.04, and any other Debian-based distribution like Linux Mint.
  • It’s recommended that you use a fresh OS install to prevent any potential issues.
  • SSH access to the server (or just open Terminal if you’re on a desktop).
  • A non-root sudo user or access to the root user. We recommend acting as a non-root sudo user, however, as you can harm your system if you’re not careful when acting as the root.

Install Okular on Ubuntu 20.04 LTS Focal Fossa

Step 1. First, make sure that all your system packages are up-to-date by running the following apt commands in the terminal.

sudo apt update
sudo apt upgrade

Step 2. Installing Okular on Ubuntu 20.04.

  • Install Okular using Universe repository Ubuntu.

By default, Okular is not available on Ubuntu 20.04 base repository. Now run the following command below to enable the universe repository on your Ubuntu system:

sudo add-apt-repository universe

Then, run the following command to update the package index and install Okular PDF viewer:

sudo apt update 
sudo apt install okular
  • Install Okular via Snap.

If the Snapd package is not already installed then you can install it by running the following command:

sudo apt update
sudo apt install snapd

To install Okular, simply use the following command:

sudo snap install okular

Step 3. Accessing Okular on Ubuntu Linux.

Once successfully installed, run the following path on your desktop to open the path: Activities -> Show Applications -> Okular or launching it through the terminal with the command shown below:


Install Okular on Ubuntu 20.04 LTS Focal Fossa

Congratulations! You have successfully installed Okular. Thanks for using this tutorial for installing the Okular PDF viewer on Ubuntu 20.04 LTS Focal Fossa system. For additional help or useful information, we recommend you check the official Okular website.

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r00t is a seasoned Linux system administrator with a wealth of experience in the field. Known for his contributions to idroot.us, r00t has authored numerous tutorials and guides, helping users navigate the complexities of Linux systems. His expertise spans across various Linux distributions, including Ubuntu, CentOS, and Debian. r00t's work is characterized by his ability to simplify complex concepts, making Linux more accessible to users of all skill levels. His dedication to the Linux community and his commitment to sharing knowledge makes him a respected figure in the field.
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