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PNM Raw at a glance
PNM Raw
PNM survived because engineers kept needing a no-drama raster family for scripts, fixtures, codecs, and image-processing experiments where the format should not be the hard part.
DIB at a glance
DIB
These formats reflect how desktop operating systems built their own graphics-resource conventions for cursors, icons, and device-independent drawing.
Format comparison
| Feature | PNM Raw | DIB |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1988 | 1990 |
| Inventor | Jef Poskanzer | Microsoft / Windows ecosystem |
| Status | active | legacy |
| 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 PNM Raw
- Your source file is already in PNM Raw.
- Preserve source expectations before exporting to DIB.
- PNM Raw is commonly used in image workflows.
When to use DIB
- Your target workflow expects DIB.
- Improve delivery compatibility with DIB.
- DIB is commonly used in image workflows.
FAQs
Why convert PNM Raw to DIB?
Convert to DIB when a Windows application, print path, or clipboard-oriented workflow expects device-independent bitmap data.
It is useful for compatibility and low-level graphics exchange inside desktop systems.
What changes when converting PNM Raw to DIB?
This conversion changes how the format behaves in downstream tools and delivery environments.
What should I review after converting PNM Raw to DIB?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.