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RST at a glance
RST
reStructuredText grew from the Docutils project and positioned itself as a more rigorously structured markup option than many looser lightweight markup systems.
PNM at a glance
PNM
PBM, PGM, PPM, PNM, and later PAM come from the tool-centric tradition of keeping image interchange formats easy to parse, script, and transform.
Format comparison
| Feature | RST | PNM |
|---|---|---|
| File type | Document | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2001 | 1988 |
| Inventor | Docutils project / David Goodger lineage | Jef Poskanzer / Netpbm lineage |
| Status | active | active |
| Primary use cases |
|
|
| Vector scaling | Not supported | Not supported |
When to use each format
When to use RST
- Your source file is already in RST.
- Preserve source expectations before exporting to PNM.
- RST is commonly used in document workflows.
When to use PNM
- Your target workflow expects PNM.
- Improve delivery compatibility with PNM.
- PNM is commonly used in image workflows.
FAQs
Why convert RST to PNM?
Convert to PNM when you need a plain, easily processed raster format for scripts, research, or utility pipelines.
It is useful as an intermediate representation in technical imaging workflows.
What changes when converting RST to PNM?
This conversion changes how the format behaves in downstream tools and delivery environments.
What should I review after converting RST to PNM?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.