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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.
ICB at a glance
ICB
The Truevision line grew out of EPICenter-era PC graphics boards, and several board names ended up surviving as filename extensions even when the underlying raster structure stayed close to the wider TGA family.
Format comparison
| Feature | MD | ICB |
|---|---|---|
| File type | Document | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2004 | 1991 |
| Inventor | John Gruber and Aaron Swartz | Truevision |
| Status | active | active |
| 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 ICB.
- MD is commonly used in document workflows.
When to use ICB
- Your target workflow expects ICB.
- Improve delivery compatibility with ICB.
- ICB is commonly used in image workflows.
FAQs
Why convert MD to ICB?
Convert to ICB when recovering historical raster assets from Truevision-era systems or normalizing old image archives before moving them into PNG, TIFF, or another contemporary format.
It is mainly a compatibility target for legacy graphics collections.
What changes when converting MD to ICB?
This conversion changes how the format behaves in downstream tools and delivery environments.
What should I review after converting MD to ICB?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.