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PGM Raw in het kort
PGM Raw
The raw PGM branch reflects the practical evolution of Netpbm-style tool formats: keep the tiny header and easy parsing, but move the pixel raster into a binary form that is much more usable for real data sizes.
JXR in het kort
JXR
JPEG XR grew from Microsoft's HD Photo work and then moved through standards bodies, but it remained much more niche than formats such as JPEG, PNG, or later AVIF/WebP families.
Formaatvergelijking
| Kenmerk | PGM Raw | JXR |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1988 | 2009 |
| Inventor | Jef Poskanzer | Microsoft |
| Status | active | active |
| Transparency | Niet ondersteund | Niet ondersteund |
| Animation | Niet ondersteund | Niet ondersteund |
| Primary use cases |
|
|
| Layer support | Niet ondersteund | Niet ondersteund |
| Vector scaling | Niet 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 PGM Raw
- Your source file is already in PGM Raw.
- Preserve source expectations before exporting to JXR.
- PGM Raw is commonly used in image workflows.
When to use JXR
- Your target workflow expects JXR.
- Improve delivery compatibility with JXR.
- JXR is commonly used in image workflows.
Veelgestelde vragen
Why convert PGM Raw to JXR?
Convert to JXR when the receiving environment explicitly expects JPEG XR or when recovering historical assets from that ecosystem.
For broader distribution, TIFF, PNG, AVIF, or WebP are usually easier choices.
What changes when converting PGM Raw to JXR?
This conversion changes how the format behaves in downstream tools and delivery environments.
What should I review after converting PGM Raw to JXR?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.