new improved Version:
{ old Windows Version:



  packJPG v2.5f (LGPL).zip
packJPG v2.5a
packJPG v2.5 (Win32) }

packPNM v1.0e

JPEG Open Source Developers Package v1.0e
Feb 26, 2013

Notes and Papers:
January 31, 2008

  • packPNM is a state-of-the-art lossless compression software for PNM (PPM/PGM/PBM) images.
    It is more or less an experiment wether parts of the packJPG algorithm could be reused for different, non DCT based image types as well. packPNMs compression ratios are varying, but typically quite good in comparison to other approaches, especially for binary (PBM) images.
    We release packPNM and its source code (to be used under the terms of the GPL v3) alongside packJPG v2.5.
    Download packPNM v1.0e from here!

Nov 15, 2011