Gemtopnm User Manual

# gemtopnm

Updated: 28 March 2025
Table Of Contents

## NAME

gemtopnm - convert a GEM .img file into a PNM image

## SYNOPSIS

gemtopnm [-debug] [gemfile]

## DESCRIPTION

This program is part of Netpbm.

gemtopnm reads a GEM .img file, either the one plane (black/white) or four plane (16 color) varieety, as input and produces a PBM or PPM file as output, depending on whether the input is one or four plane.

The input file is gemfile if you specify that argument, or Standard Input otherwise. Output is to Standard Output.

## OPTIONS

In addition to the options common to all programs based on libnetpbm (most notably -quiet, see Common Options), gemtopnm recognizes the following command line option:

-debug
  Produce output describing the contents of the .img file.

## SEE ALSO

pbmtogem, pnm

## AUTHOR

Copyright (C) 1988 Diomidis D. Spinellis (dds@cc.ic.ac.uk).

## Table Of Contents

- SYNOPSIS
- DESCRIPTION
- OPTIONS
- SEE ALSO
- AUTHOR