What is jpylyzer?

Jpylyzer is a validator and feature extractor for JP2 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).

Starting with version 2.2, Jpylyzer also supports High Throughput JPEG 2000 (HTJ2K) and its JPH format, which is defined by Part 15 of the standard (ISO/IEC 15444-15).

Jpylyzer can validate raw image codestreams as well.

Getting started

To get started with jpylyzer, check out the following links:


Jpylyzer is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.


The development of jpylyzer was partially funded by the EU FP 7 project SCAPE (SCAlabable Preservation Environments).