With Filestar you get 222 different skills for working productively with Portable Gray Map Image (.pgm) files.
About .Pgm
Name
Portable Gray Map Image
Extension
.pgm
Format
Binary
Category
Raster Image
Developer
Jef Poskanzer
Description
A PGM file is a grayscale image file saved in the portable gray map (PGM) format and encoded with one or two bytes (8 or 16 bits) per pixel. It contains header information and a grid of numbers that represent different shades of gray from black (0) to white (up to 65,536). PGM files are typically stored in ASCII text format, but also have a binary representation.