qiv binary package in Ubuntu Focal amd64

 Quick Image Viewer (qiv) is a very small and pretty fast GDK/Imlib image
 viewer. Features include zoom, maxpect, scale down, fullscreen,
 brightness/contrast/gamma correction, slideshow, pan with keyboard and mouse,
 rotate left/right, flip, delete (move to .qiv-trash/), jump to image x, jump
 forward/backward x images, filename filter, and you can use qiv to set your
 X11-Desktop background.
 .
 qiv also supports the assignment of external commands (like metacam) to unused
 keys.

Source package