pcxtoppm (1) - Linux Manuals

pcxtoppm: convert a PCX file into a portable pixmap

Command to display pcxtoppm manual in Linux: $ man 1 pcxtoppm

pcxtoppm - convert a PCX file into a portable pixmap

pcxtoppm [-stdpalette] [-verbose] [pcxfile]

Reads a PCX file as input. Produces a portable pixmap as output. Supported PCX types are:

Colormapped files with 2-16 colors.: "Packed pixel" format (1, 2 or 4 bits/pixel, 1 plane) or bitplane format (1 bit/pixel, 1-4 planes). The program checks the colormap and uses an internal one if the provided colormap is completely black.
Colormapped files with 256 colors: 8 bits/pixel, 1 plane, colormap at the end of the file.
24bit truecolor files: 24bit RGB: 8 bits/pixel, 3 planes.
32bit truecolor files: 24bit RGB + 8bit intensity: 8 bits/pixel, 4 planes.

-stdpalette: Enforce the use of the internal colormap for files with 16 colors or less.