GNU a2ps is an Any to PostScript filter. Of course it processes plain text files, but also pretty prints quite a few popular languages.

More detailed web pages about GNU a2ps, including documentation, flashes, updates, mailing lists, FAQ etc., is available at http://www.inf.enst.fr/~demaille/a2ps

How to print a raw html file with a2ps

a2ps delegates to a web browser rendering engine when printing. Here’s how to print the raw html.

a2ps --delegate no test.html