How to convert JPG to JP2
- Add your .JPG file - drop it in the box above or click to browse.
- Convert it to .JP2 in a few seconds.
- Download your new .JP2 file.
What to expect
- Quality cannot exceed the source JPG; lossy JP2 adds a second round of compression, while lossless JP2 preserves the current pixels at a larger size.
- JP2 is poorly supported in browsers (mainly Safari) and needs a plugin or specific viewer on most systems.
- Exif and other JPG metadata may not carry over into the JP2 container.
Frequently asked questions
Why convert a JPG to JP2?
JP2 (JPEG 2000) uses wavelet compression and supports both lossy and lossless modes, so it is chosen in archival, medical, or specialist imaging contexts that prefer that format over ordinary JPEG.
Will converting to JP2 improve image quality?
No. The JPG is already lossy, so its existing compression artifacts are baked in. Converting to JP2 preserves those pixels but cannot restore detail the JPG discarded.
Can I open a JP2 anywhere?
Support is limited. On Windows use IrfanView (with its JPEG 2000 plugin) or XnView MP; macOS Preview opens it; among browsers only Safari displays it natively, so JP2 is awkward for general web sharing.
Should I use lossy or lossless JP2?
Lossless JP2 keeps the current pixels exactly but produces a larger file, while lossy JP2 re-compresses and adds a second lossy step on top of the JPG's. Neither recovers quality already gone from the JPG.
Programs that convert JPG: XnView · ACDSee Photo Manager · Adobe Photoshop · Corel PHOTO-PAINT · IrfanView · Corel PaintShop Pro · Adobe Photoshop for Mac · Preview
