JPEG 2000

Writable

image

image compression standard and coding system

Identify it

Extensions	`.jp2.jpf.jpx.jpm.mj2.j2c.j2k.jpc.jpg2`
MIME types	`image/jp2image/jpximage/jpmvideo/mj2`
Signatures	`0000000c6a5020200d0a870a` at byte 0
PRONOM	`fmt/463x-fmt/392`
Wikidata	`Q931783`
Library of Congress	`fdd000143`

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ImageMagickOpen sourcereads and writes · ImageMagick License
OpenJPEGOpen sourcewrites · 2-clause BSD License
ConverseenOpen sourcereads · GNU General Public License, version 3.0
ExifToolOpen sourcereads · Artistic License / GNU General Public License, version 1.0 or later
nomacsOpen sourcereads · GNU General Public License, version 3.0
OpenImageIOOpen sourcereads · BSD licenses
Adobe Photoshop Elements 3.0reads and writes
Grokreads and writes
IrfanViewreads and writes · freeware
PaintShop Pro X4reads and writes
Q1936840writes
Q650922writes · freeware / proprietary license
ACDSeereads · proprietary license
Advanced Guard for Information Securityreads
Affinity Photoreads
ArcGISreads · proprietary license
Pinnacle Studio 17 Ultimatereads
Quick Lookreads

To	With	Fidelity	Command and losses
Portable Network Graphics	ImageMagick	Lossless	`convert in.j2c out.png` Pixels kept; some metadata, colour profiles or layers may be dropped.
Tagged Image File Format	ImageMagick	Lossless	`convert in.j2c out.tif` Pixels kept; some metadata, colour profiles or layers may be dropped.
GIF 89a	ImageMagick	Lossy	`convert in.j2c out.gif` Reduced to 256 colours.
JPEG File Interchange Format 1.02	ImageMagick	Lossy	`convert in.j2c out.jpg` Lossy compression.
WebP	ImageMagick	Lossy	`convert in.j2c out.webp` Lossy compression.

From Converters (FFmpeg, ImageMagick, Pandoc, LibreOffice), Just Solve the File Format Problem (File Formats Wiki), Wikidata. Updated 2026-10-24.