PGF (Progressive Graphics File)

PGF (Progressive Graphics File) is a raster image file format that uses wavelet compression.

Format
PGF files (version 6, at least) begin with a 24-byte fixed header.

Identification
Files being with ASCII characters " ".

Software

 * Konvertor
 * libPGF: C++ library, and command-line utilities
 * abydos

Links

 * libPGF.org
 * Wikipedia article