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PGM Raw at a glance
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.
MIFF at a glance
MIFF
MIFF reflects the older tradition of image-processing toolkits defining their own native technical formats for fidelity and internal workflow convenience.
Format comparison
| Feature | PGM Raw | MIFF |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1988 | 1990 |
| Inventor | Jef Poskanzer | ImageMagick |
| Status | active | proprietary |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Layer support | Not supported | Not supported |
| Vector scaling | Not supported | Not supported |
| Camera raw data | Not supported | Not supported |
| HDR support | Not supported | Not supported |
| Streaming ready | Not supported | Not supported |
When to use each format
When to use PGM Raw
- Your source file is already in PGM Raw.
- Preserve source expectations before exporting to MIFF.
- PGM Raw is commonly used in image workflows.
When to use MIFF
- Your target workflow expects MIFF.
- Improve delivery compatibility with MIFF.
- MIFF is commonly used in image workflows.
FAQs
Why convert PGM Raw to MIFF?
Convert to MIFF when ImageMagick or a related processing stack is the main consumer and you want a tool-native working format.
It is useful as an intermediate in automated imaging pipelines.
What changes when converting PGM Raw to MIFF?
This conversion changes how the format behaves in downstream tools and delivery environments.
What should I review after converting PGM Raw to MIFF?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.