Type: 
    Extension:
      Version: 
  Compression:
  Color Depth:
   Maintainer: 
Specification:

The Portable pixmap file format is part of the Extended Portable Bitmap
Utilities (PBMPLUS). PPM is used as an intermediate format for storing color
bitmap information generated by the PBMPLUS toolkit. PPM files may be either
binary or ASCII and store pixel values up to 24 bits in size.

Information and source code for PPM can be found in the distribution for
PBMPLUS (see the section on the PBM format for information on PBMPLUS). The
specification for the PPM format can also be found in the manual page for
ppm(5) on many Unix systems.