ppmtogif(1)

NAME
ppmtogif - convert a portable pixmap into a GIF file

SYNOPSIS
ppmtogif [-interlace] [-sort] [-map mapfile] [-transparent color] [ppmfile]

DESCRIPTION
Reads a portable pixmap as input. Produces a GIF file as output.

OPTIONS

-interlace
    Tells the program to produce an interlaced GIF file.

-sort
    Produces a GIF file with a sorted color map.

-map
    mapfile Uses the colors found in the mapfile to create the colormap in the GIF file, instead of the colors from ppmfile. The mapfile can be any ppm file; all that matters is the colors in it. If the colors in ppmfile do not match those in mapfile , they are matched to a "best match". A (much) better result can be obtained by using the following filter in advance: ppmquant -floyd -map mapfile

-transparent color
    Mark the given color as transparent in the GIF file. The color is specified as in ppmmake(1). Note that this option outputs a GIF89a format file which might not be understood by your software.

All flags can be abbreviated to their shortest unique prefix.

SEE ALSO
giftoppm(1), ppmquant(1), ppm(5)

AUTHOR
Based on GIFENCOD by David Rowley <mgardi@watdcsu.waterloo.edu>. Lempel-Ziv compression based on "compress". Copyright (C) 1989 by Jef Poskanzer.