Pkfix is a useful utility for replacing resolution-dependent bitmapped fonts in a dvips-produced PostScript file with the corresponding resolution-independent vector fonts. Unfortunately, pkfix needs to parse certain PostScript comments that appear only in files produced by dvips versions later than 5.58 (ca. 1996); it fails to work on PostScript files produced by older versions of dvips.

Pkfix-helper is a program that attempts to insert newer-dvips comments into an older-dvips PostScript file, thereby making the file suitable for processing by pkfix. pkfix-helper can sometimes process documents fully autonomously but does require the user to verify and, if needed, correct its decisions.

The author is Scott Pakin. The package is Copyright © 2009 Scott Pakin.