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JPM in het kort
JPM
JPEG 2000 arrived as a major standards effort to improve on classic JPEG, but its practical adoption concentrated in specialist domains rather than in the universal browser-and-camera role held by JPEG.
XPM in het kort
XPM
Before today's relatively small set of mainstream consumer image formats dominated everyday use, desktop software, workstations, GUI systems, and early graphics tools produced many specialized raster formats with local importance.
Formaatvergelijking
| Kenmerk | JPM | XPM |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2000 | 1989 |
| Inventor | Joint Photographic Experts Group | Daniel Dardailler, Colas Nahaboo (Groupe Bull) |
| Status | active | legacy |
| Transparency | Niet ondersteund | Niet ondersteund |
| Animation | Niet ondersteund | Niet ondersteund |
| Primary use cases |
|
|
| Layer support | Ondersteund | Niet ondersteund |
| Vector scaling | Ondersteund | Niet ondersteund |
| Camera raw data | Niet ondersteund | Niet ondersteund |
| HDR support | Niet ondersteund | Niet ondersteund |
| Streaming ready | Niet ondersteund | Niet ondersteund |
Wanneer je elk formaat gebruikt
When to use JPM
- Your source file is already in JPM.
- Preserve source expectations before exporting to XPM.
- JPM is commonly used in image workflows.
When to use XPM
- Your target workflow expects XPM.
- Improve delivery compatibility with XPM.
- XPM is commonly used in image workflows.
Veelgestelde vragen
Why convert JPM to XPM?
Convert to XPM when maintaining or restoring X11-era icon assets or other historical Unix interface graphics.
It is useful where text-based icon compatibility matters more than modern compression.
What changes when converting JPM to XPM?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to XPM removes layer support. Moving to XPM removes vector scaling.
What should I review after converting JPM to XPM?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.