This entry is mostly for my convenience, to make it easier to find in the future.
Source: http://latex-my.blogspot.de/2012/01/text-to-path-conversion-with.html
If you just want a one-off conversion at the command line:
gs -sDEVICE=pswrite -dNOCACHE -sOutputFile=”OutputFile-nofonts.ps” -q -dbatch -dNOPAUSE -dQUIET “InputFile.ps” -c quit