Install ruby-pdf-core by entering the following commands in the terminal:
sudo apt update sudo apt install ruby-pdf-core
Description:
Ruby library to render PDF documents
PDF::Core is a pure Ruby library to render PDF documents. It supports several PDF features, such as among others: * low-level annotation * istream objects and stream filters * NameTree * object repository * object serialization * indirect objects * page geometries . It is used internally by Prawn (provided in the ruby-prawn package), a Ruby PDF generation library.
Homepage: http://prawn.majesticseacreature.com
Version: 0.6.1-1
Section: universe/ruby