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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.
BMP at a glance
BMP
Bitmap and device-independent bitmap structures became part of the Windows graphics story early in the platform's life, which is why BMP still appears in older desktop workflows and low-friction image interchange tasks.
Format comparison
| Feature | PGM Raw | BMP |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1988 | 1990 |
| Inventor | Jef Poskanzer | Microsoft |
| Status | active | active |
| 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 BMP.
- PGM Raw is commonly used in image workflows.
When to use BMP
- Your target workflow expects BMP.
- Improve delivery compatibility with BMP.
- BMP is commonly used in image workflows.
FAQs
Why convert PGM Raw to BMP?
Convert to BMP when a Windows-oriented tool, legacy application, or device explicitly expects simple bitmap input.
It is useful for compatibility, debugging image pipelines, and straightforward raster exchange where file size is not the priority.
What changes when converting PGM Raw to BMP?
This conversion changes how the format behaves in downstream tools and delivery environments.
What should I review after converting PGM Raw to BMP?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.