Install viewpdf.app by entering the following commands in the terminal:
sudo apt update sudo apt install viewpdf.app
Description:
Portable Document Format (PDF) viewer for GNUstep
ViewPDF is an application to view and navigate in PDF documents. . Key Features * Zoom * Keyboard shortcuts for fast navigation
Homepage: http://home.gna.org/gsimageapps/
Version: 1:0.2dfsg1-6build1
Section: universe/text