install Zathura

 $ sudo apt install zathura

[sudo] password for dhwan: 

Reading package lists... Done

Building dependency tree       

Reading state information... Done

The following additional packages will be installed:

  libgirara-gtk3-3 zathura-pdf-poppler

Suggested packages:

  zathura-ps zathura-djvu zathura-cb

The following NEW packages will be installed:

  libgirara-gtk3-3 zathura zathura-pdf-poppler

0 upgraded, 3 newly installed, 0 to remove and 24 not upgraded.

Need to get 231 kB of archives.

After this operation, 983 kB of additional disk space will be used.

Do you want to continue? [Y/n] y

Get:1 http://id.archive.ubuntu.com/ubuntu focal/universe amd64 libgirara-gtk3-3 amd64 0.3.4-1 [55,7 kB]

Get:2 http://id.archive.ubuntu.com/ubuntu focal/universe amd64 zathura-pdf-poppler amd64 0.3.0-1 [11,6 kB]

Get:3 http://id.archive.ubuntu.com/ubuntu focal/universe amd64 zathura amd64 0.4.5-2 [163 kB]

Fetched 231 kB in 3s (67,7 kB/s)  

Selecting previously unselected package libgirara-gtk3-3:amd64.

(Reading database ... 310870 files and directories currently installed.)

Preparing to unpack .../libgirara-gtk3-3_0.3.4-1_amd64.deb ...

Unpacking libgirara-gtk3-3:amd64 (0.3.4-1) ...

Selecting previously unselected package zathura-pdf-poppler.

Preparing to unpack .../zathura-pdf-poppler_0.3.0-1_amd64.deb ...

Unpacking zathura-pdf-poppler (0.3.0-1) ...

Selecting previously unselected package zathura.

Preparing to unpack .../zathura_0.4.5-2_amd64.deb ...

Unpacking zathura (0.4.5-2) ...

Setting up libgirara-gtk3-3:amd64 (0.3.4-1) ...

Setting up zathura-pdf-poppler (0.3.0-1) ...

Setting up zathura (0.4.5-2) ...

Processing triggers for gnome-menus (3.36.0-1ubuntu1) ...

Processing triggers for libc-bin (2.31-0ubuntu9.2) ...

Processing triggers for man-db (2.9.1-1) ...

Processing triggers for bamfdaemon (0.5.3+18.04.20180207.2-0ubuntu2) ...

Rebuilding /usr/share/applications/bamf-2.index...

Processing triggers for desktop-file-utils (0.24-1ubuntu3) ...

Processing triggers for mime-support (3.64ubuntu1) ...

Processing triggers for hicolor-icon-theme (0.17-2) ...