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Opj logo.png
Original author(s) Hervé Drolon, François-Olivier Devaux, Antonin Descampe, Yannick Verschueren, David Janssens, Benoît Macq
Initial release December 15, 2005 (2005-12-15)[1]
Stable release
2.1.2 / September 28, 2016; 12 months ago (2016-09-28)[2]
Development status Active
Written in C
Operating system Mac OS X, Windows, POSIX
Type graphic software
License BSD

OpenJPEG is an open-source library to encode and decode JPEG 2000 images. As of version 2.1 released in April 2014, it is officially conformant with the JPEG 2000 Part-1 standard.[3] It was subsequently adopted by ImageMagick instead of JasPer in 6.8.8-2[4] and approved as new reference software for this standard in July 2015.[5]

Support for lossless 16-bit images[edit]

Unlike JasPer,[6] another open-source JPEG 2000 implementation, OpenJPEG fully respects the JPEG 2000 specification and can compress/decompress lossless 16-bit images.[citation needed]


OpenJPEG is a fork of libj2k, a JPEG-2000 codec library written by David Janssens during his master thesis at Université Catholique de Louvain (UCL) in 2001.

See also[edit]


External links[edit]