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MD at a glance
MD
Markdown was created in 2004 by John Gruber with Aaron Swartz, but the later CommonMark effort became important because the original syntax description was too ambiguous to keep implementations aligned.
RAS at a glance
RAS
Before today's relatively small set of mainstream consumer image formats dominated everyday use, desktop software, workstations, GUI systems, and early graphics tools produced many specialized raster formats with local importance.
Format comparison
| Feature | MD | RAS |
|---|---|---|
| File type | Document | Image |
| Extensions |
|
|
| MIME type |
|
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| Created year | 2004 | 1987 |
| Inventor | John Gruber and Aaron Swartz | Sun Microsystems |
| Status | active | legacy |
| Primary use cases |
|
|
| Vector scaling | Not supported | Not supported |
When to use each format
When to use MD
- Your source file is already in MD.
- Preserve source expectations before exporting to RAS.
- MD is commonly used in document workflows.
When to use RAS
- Your target workflow expects RAS.
- Improve delivery compatibility with RAS.
- RAS is commonly used in image workflows.
FAQs
Why convert MD to RAS?
Convert to RAS when preserving compatibility with historical Sun or Unix image assets.
In most modern contexts it serves as a migration and archive-recovery format.
What changes when converting MD to RAS?
This conversion changes how the format behaves in downstream tools and delivery environments.
What should I review after converting MD to RAS?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.