FBM image (also called Fuzzy Bitmap or Fuzzy Pixmap) is a raster image file format associated with the Fuzzy Pixmap Manipulation Library. It supports a variety of color formats, including truecolor, grayscale, and palette color.
FBM files have a 256-byte header, composed of fixed-length ASCII text fields.
Files begin with the ASCII signature "
%bitmap", followed by a NUL byte (
- fbm-1.2.tgz → fbm.h defines the header format (search for "fbm_filehdr_struct")