JBIG-KIT provides a portable library of compression and decompression
functions with a documented interface that you can include very easily
into your image or document processing software. In addition, JBIG-KIT
provides ready-to-use compression and decompression programs with a
simple command line interface (similar to the converters found in netpbm).
JBIG-KIT implements the specification:
ISO/IEC 11544:1993 and ITU-T Recommendation T.82(1993):
Information technology — Coded representation of picture and audio
information — Progressive bi-level image compression
which is commonly referred to as the “JBIG1 standard”