pnmtoddif
Convert PNM images to DDIF format
TLDR
Convert PNM to DDIF format
$ pnmtoddif [input.pnm] > [output.ddif]
SYNOPSIS
pnmtoddif [options] [file]
DESCRIPTION
pnmtoddif converts PNM images to DDIF (Digital Document Interchange Format) used by DEC/HP document systems. Part of Netpbm toolkit.
PARAMETERS
-resolution n
Output resolution in DPI.