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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.
J2K at a glance
J2K
JPEG 2000 arrived as a major standards effort to improve on classic JPEG, but its practical adoption concentrated in specialist domains rather than in the universal browser-and-camera role held by JPEG.
Format comparison
| Feature | MD | J2K |
|---|---|---|
| File type | Document | Image |
| Extensions |
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| MIME type |
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| Created year | 2004 | 2000 |
| Inventor | John Gruber and Aaron Swartz | Joint Photographic Experts Group |
| Status | active | active |
| Primary use cases |
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| Vector scaling | Not supported | Supported |
When to use each format
When to use MD
- Your source file is already in MD.
- Preserve source expectations before exporting to J2K.
- MD is commonly used in document workflows.
When to use J2K
- Your target workflow expects J2K.
- Improve delivery compatibility with J2K.
- J2K is commonly used in image workflows.
FAQs
Why convert MD to J2K?
Convert to J2K when a technical or archival workflow explicitly expects a JPEG 2000 codestream rather than a consumer-friendly container.
It is useful in specialized interchange and preservation pipelines.
What changes when converting MD to J2K?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to J2K adds vector scaling.
What should I review after converting MD to J2K?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.