What is j2k file? How to open j2k files?
File extension j2k is associated with the JPEG2000 code stream image file format.
JPEG 2000 (JP2) is an image compression standard and coding system introduced by Joint Photographic Experts Group committee in 2000.
See also jpc file extension record in our database.
Updated: January 3, 2025
The default software associated to open j2k file:
XnView MP 
Company or developer:
Pierre-Emmanuel Gougelet
A free (for non-commercial purposes) powerful cross-platform media browser, viewer and converter. Compatible with more than 500 formats and also supports export to 70 different file formats. It works on Windows, Linux and macOS (OS X).
Help how to open:
Use Nero PhotoSnapm XnView to view content of the .j2k file.
How to convert:
It should be possible to convert .j2k images to other graphics formats, provided you will use a converter or graphics editor with support of J2K format.
Find conversions from j2k file:
j2k to dwg
Find converter to j2k file type:
sid to j2k
List of software applications associated to the .j2k file extension
Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open j2k file, edit j2k file, convert j2k file, view j2k file, play j2k file etc. (if exist software for corresponding action in File-Extensions.org's database).
Hint:
Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting j2k files.
Software that open j2k file - JPEG2000 code stream image
Programs supporting the exension j2k on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about Affinity Photo for open j2k file action.
j2k file viewer - programs that view j2k file - JPEG2000 code stream image
Programs supporting the exension j2k on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for view j2k file action.
j2k file converter - software that convert j2k file - JPEG2000 code stream image
Programs supporting the exension j2k on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about Picture Resize Free Online Images Converter for convert j2k file action.
Software that import j2k file - JPEG2000 code stream image
Programs supporting the exension j2k on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for import j2k file action.
Applications that export j2k file - JPEG2000 code stream image
Programs supporting the exension j2k on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about Xara Page & Layout Designer for export j2k file action.
Unspecified and all other actions for computer programs working with j2k file - JPEG2000 code stream image
Click on the software link for more information about FastPictureViewer Professional. FastPictureViewer Professional uses j2k file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).
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