Last time I had to generate PDF's from scratch rather than inheriting a mess I built a custom heavily modified version of bootstrap (really ripped it apart) jus

Last time I had to generate PDF's from scratch rather than inheriting a mess I built a custom heavily modified version of bootstrap (really ripped it apart) just for print use and fed it to wkhtmltopdf via snappy, it worked great and was very fast to develop since I could output to the browser as HTML to debug.