Mac OSWhat is the J2K file format?
A file with the .J2K extension is a file known as JPEG2000 code stream image. It belongs to the Raster Image Files category. This format is associated with Joint Photographic Experts Group.
The reliable way to open a .J2K file is with software that recognises this exact format, rather than guessing from the file name. If you are not sure what created a file, our file identifier can read its first bytes and name the real format, even when the file has been renamed.
This page lists 11 programs that open .J2K files. A fully verified, hand-written description of this format is being prepared; until then, the details on this page are drawn directly from our database.
Format details
in a nutshellFULL NAMEJPEG2000 code stream image
DEVELOPERJoint Photographic Experts Group
CATEGORYRaster Image Files
Programs that open J2K files
Windows8 apps
Community Q&A
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