CLI for generating PDFs for offline reading

I've always thought that extensive reading was best suited for the realm of paper. As a result, I've created a command-line interface (CLI) tailored for my own use and decided to make it open source. I welcome any feedback you may have.[Edit] Sample PDF :: drive.google.com/file/d/1n7M1TKOptSsYiibrbvV_Yojx53TK3k5E/view