JPM
Readableimage
The JPEG 2000 Compound Image File Format is an optional file format for storing compound images using the JPEG 2000 file format family architecture. A compound image is an image that may contain scanned images, synthetic images or both, and that preferably requires a mix of continuous tone and bi-level compression methods.
Identify it
| Extensions | .jpm |
|---|---|
| MIME types | image/jpm |
| Signatures | 0000000c6a5020200d0a870a at byte 0 (JPEG 2000 Compound Image File Format) |
| PRONOM | fmt/463 |
| Wikidata | Q28206433 |
| Library of Congress | fdd000144 |
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Open it
- ImageMagickOpen source
- OpenJPEGOpen source
- ExifToolOpen source
- ConverseenOpen source
- nomacsOpen source
- OpenImageIOOpen source
Convert it
| To | With | Fidelity | Command and losses |
|---|---|---|---|
| Portable Network Graphics | ImageMagick | Lossless | convert in.j2c out.pngPixels kept; some metadata, colour profiles or layers may be dropped. |
| Tagged Image File Format | ImageMagick | Lossless | convert in.j2c out.tifPixels kept; some metadata, colour profiles or layers may be dropped. |
| GIF 89a | ImageMagick | Lossy | convert in.j2c out.gifReduced to 256 colours. |
| JPEG File Interchange Format 1.02 | ImageMagick | Lossy | convert in.j2c out.jpgLossy compression. |
| WebP | ImageMagick | Lossy | convert in.j2c out.webpLossy compression. |
Sources
From Just Solve the File Format Problem (File Formats Wiki), PRONOM, Wikidata. Updated 2026-10-24.