We are pleased to announce that a release candidate for jpylyzer 2.1 is now available for community testing. Jpylyzer is an open source validator and feature extractor for JP2 images, and part of the OPF reference toolset. 

This is a maintenance release consisting of minor changes, including:

• Detailed reporting of packet level codestream markers, selectable by the user.
• Bug fixes.
• Documentation improvements.
• Improvements to the testing and release process.

Users should be aware this is the last Jpylyzer release that will be compatible with Python 2.7. Maintenance of Python 2.7 was halted more than two years ago and we strongly urge users to upgrade to Python 3.

Download the software and read the release notes here.

Feedback welcome

We encourage you to download and test the release candidate. Please see our user instructions for guidance on installation. 

If you experience a problem please report it on the jpylyzer issue tracker on GitHub or contact us.

We will continue internal testing of the release candidate and there may be a few small changes before the public production release. 

About jpylyzer

Jpylyzer is an open source validator and feature extractor for JP2 images licensed under the GNU Lesser General Public License. JP2 is the still image format that is defined by Part 1 of the JPEG 2000 image compression standard (ISO/IEC 15444-1).

The software is maintained by Johan van der Knijff at the Koninklijke Bibliotheek, and the Open Preservation Foundation provides hosting and support through software quality testing and delivery, and open source best practice.

Jpylyzer is open source, free to download, to use and to modify. However, it is not free to host, maintain, support or develop. If you use jpylyzer, please consider supporting its development by becoming an OPF member or making a donation towards development.