Install ruby-poppler by entering the following commands in the terminal:
sudo apt update sudo apt install ruby-poppler
Description:
Ruby bindings for the libpoppler-glib library
Poppler is a PDF rendering library based on xpdf PDF viewer. libpoppler-glib is Glib binding for Poppler. . This package contains ruby bindings for libpoppler-glib.
Homepage: http://ruby-gnome2.osdn.jp/
Version: 3.2.4-1
Section: universe/ruby