JPEG 2000 (JP2) shows up in medical imaging, satellite data and digital archives, but almost nothing outside those fields opens it. Filemorph converts JP2 to a standard JPG on your iPhone, no upload needed.

JPEG 2000 is a format specialized fields rely on for its quality and compression characteristics — libraries digitizing rare books, medical imaging systems, and some geospatial data all use .jp2 files. Outside those systems, though, JP2 is rarely supported by everyday photo apps, messaging tools or browsers.
Filemorph decodes the JP2 using ImageIO's JPEG 2000 decoder and re-encodes it as a standard JPG, producing a file that opens anywhere without needing specialized software.
In the app: Convert → To JPEG.
JPG opens in every photo viewer, browser and messaging app, while JP2 is largely confined to the specialized software that produced it. Convert to JPG whenever you need to view, share or archive a JP2 file outside its original system.
Yes. Unlike web converters that upload your files to a server, Filemorph converts every file locally using Apple's frameworks. Nothing leaves your device, and it works with no internet connection. This conversion is in the free tier.
JP2 is the file extension for JPEG 2000, a format used in medical imaging, digital archives and some geospatial data. It is a different, more specialized format from ordinary JPG despite the similar name.
Support for JPEG 2000 is inconsistent across everyday apps. Converting to JPG guarantees it opens in Photos, Messages and every browser.
Yes, it is part of Filemorph's free tier.
Free, on-device, no upload. Plus 300+ more file operations.
Download on theApp Store