The JPEG 2000 standard was developed to replace the 1992 JPEG standard. It provides several improvements over the JPEG format. The main improvement is a wavelet compression algorithm instead of JPEG’s DCT compression. There are applications apart from photos and medical images. Examples include digital cinema, broadcast media, and video surveillance. Files may be saved as .JPF, .JPC, or .JPX.
Below indexes list software to open JP2 files by system platform. Files can be copied anywhere but may not open properly. Windows has various apps that use JP2 files for different purposes. Try some to open your file.
JPEG 2000 part-2 extension defines mechanisms for animation and multiple code streams in one image. .jpx extension is used for this extended format. Code-stream data is not saved in files primarily so no standard extension. Though .jpc or .j2k is used for testing. Metadata is encoded differently from JPEG-1, using XML and the ISO standard 12234-1.4.
If the system does not support the file, install a JP2 supporting program. If installed but not set as default, right-click the file, choose “Open with” and select the program. Check “Always use” to set as default. OSX users can set default programs similarly.
Many modern viewers and editors can view JP2 images. Those able to open JP2 files typically can also save them as other formats.
Adobe Photoshop
GIMP
IrfanView