Install chm2pdf by entering the following commands in the terminal:
sudo apt update sudo apt install chm2pdf
Description:
A Python script that converts CHM files into PDF files
Convert CHM files to PDF files. This package supports batch conversion, command line, PDF security options, password protection, and compression modes. The program has an Explorer-like interface.
Homepage: http://code.google.com/p/chm2pdf/
Version: 0.9.1-1.2ubuntu1
Section: universe/text