Jpylyzer is a validator and feature extractor for JP2 (JPEG 2000 Part 1) images. JP2 is the still image format that is defined by Part 1 of the JPEG 2000 image compression standard (ISO/IEC 15444-1). Jpylyzer tells you if a JP2 image really conforms to the format's specifications (validation). It also reports the image's technical characteristics (feature extraction). 

    Jpylyzer was developed with partial funding of the SCAPE project and is available for download via its own website or Github

    More information about Jpylyzer can also be found on the blog of the Open Preservation Foundation.


    When using jpylyzer, we request you to cite it as follows:

    Knijff, J. van der & others. Jpylyzer. KB / National Library of the Netherlands and Open Preservation Foundation. Available from


    For information about how to use jpylyzer, see the user manual.