Skip to content


Subversion checkout URL

You can clone with
Download ZIP
JBIG2 Encoder
C++ C Python Shell
Latest commit 0693dcd 1 @agl Merge pull request #43 from zdenop/upstream-rpath
configure: add option '--disable-rpath' (Issue #42)


Welcome, gentle reader.

This is an encoder for JBIG2:

JBIG2 encodes bi-level (1 bpp) images using a number of clever tricks to get
better compression than G4. This encoder can:
   * Generate JBIG2 files, or fragments for embedding in PDFs
   * Generic region encoding
   * Perform symbol extraction, classification and text region coding
   * Perform refinement coding and,
   * Compress multipage documents

It uses the (Apache-ish licensed) Leptonica library:

You'll need version 1.68.


The refinement coding causes Acrobat to crash. It's not known if this is a bug
in Acrobat, though it may well be.


See the jbig2enc.h header for the high level API, or the jbig2 program for an
example of usage:

$ jbig2 -s -p -v *.jpg && output >out.pdf

to encode jbig2 files for pdf creation.
If you want to encode an image and then view output first to include in pdf

$ jbig2 -s -S -p -v -O out.png *.jpg

If you want to encode an image as jbig2 (can be view in STDU Viewer) run:

$ jbig2 -s feyn.tif >feyn.jb2
Something went wrong with that request. Please try again.