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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.
ICNS at a glance
ICNS
ICNS reflects the Mac graphics-resource tradition where a single icon asset is really a packaged set of representations for one application or object identity.
Format comparison
| Feature | VML | ICNS |
|---|---|---|
| File type | Vector | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1998 | 2000 |
| Inventor | Microsoft, Macromedia, Autodesk, Hewlett-Packard, Visio | Apple |
| Status | legacy | proprietary |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| 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 ICNS.
- VML is commonly used in vector workflows.
When to use ICNS
- Your target workflow expects ICNS.
- Improve delivery compatibility with ICNS.
- ICNS is commonly used in image workflows.
FAQs
Why convert VML to ICNS?
Convert to ICNS when creating or updating macOS application icons or preserving Apple-specific icon assets.
It is the correct target when a Mac application bundle or desktop asset workflow expects native icon resources.
What changes when converting VML to ICNS?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to ICNS removes vector scaling.
What should I review after converting VML to ICNS?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.