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VML at a glance
VML
VML emerged as a 1998 W3C submission backed by Microsoft and partners such as Autodesk, Hewlett-Packard, Macromedia, and Visio, reflecting the moment when web graphics standards were still unsettled.
CRW at a glance
CRW
Early Canon digital-camera workflows used raw formats like CRW before the later EOS raw families stabilized around CR2 and then CR3.
Format comparison
| Feature | VML | CRW |
|---|---|---|
| File type | Vector | Image |
| Extensions |
|
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| MIME type |
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| Created year | 1998 | 2000 |
| Inventor | Microsoft, Macromedia, Autodesk, Hewlett-Packard, Visio | Canon |
| Status | legacy | proprietary |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
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| Layer support | Not supported | Not supported |
| Vector scaling | Supported | Not supported |
When to use each format
When to use VML
- Your source file is already in VML.
- Preserve source expectations before exporting to CRW.
- VML is commonly used in vector workflows.
When to use CRW
- Your target workflow expects CRW.
- Improve delivery compatibility with CRW.
- CRW is commonly used in image workflows.
FAQs
Why convert VML to CRW?
Convert to CRW when maintaining compatibility with older Canon raw libraries or recovering historical camera originals.
In most current workflows it is a source to preserve or migrate, not a preferred new output format.
What changes when converting VML to CRW?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to CRW removes vector scaling.
What should I review after converting VML to CRW?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.