pstopnm
Convert a PostScript file to a PNM image.
TLDR
Convert a PS file to PNM images, storing page N of the input to path/to/fileN.ppm
$ pstopnm [path/to/file.ps]
Explicitly specify the output format
$ pstopnm -[pbm|pgm|ppm] [path/to/file.ps]
Specify the resolution of the output in dots per inch
$ pstopnm -dpi [n] [path/to/file.ps]
