This program is part of Netpbm.
imgtoppmreads an Img-whatnot file as input and produces a PPM image as output. The Img-whatnot toolkit is available for FTP on venera.isi.edu, along with numerous images in this format.
There are no command line options defined specifically for imgtoppm, but it recognizes the options common to all programs based on libnetpbm (See Common Options.)
Copyright (C) 1989 by Jef Poskanzer.