Optimizer is a program which can help you achieve
the highest lossy compression that is visually
acceptable. Input files may be in the JPEG, PNG,
or PNM formats, and the supported output formats
are JPEG, JP2 (JPEG 2000), or djvu/c44 (DJVU).
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.