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WMF at a glance
WMF
The original WMF specification was published in the Windows 3.1 SDK documentation in 1992. Aldus Corporation independently added a 'placeable' header for device independence, which Microsoft later incorporated in Windows 2000. The format specification was republished in 2006 under the Microsoft Open Specification Promise.
MIFF at a glance
MIFF
MIFF reflects the older tradition of image-processing toolkits defining their own native technical formats for fidelity and internal workflow convenience.
Format comparison
| Feature | WMF | MIFF |
|---|---|---|
| File type | Vector | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1990 | 1990 |
| Inventor | Microsoft Corporation | ImageMagick |
| 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 WMF
- Your source file is already in WMF.
- Preserve source expectations before exporting to MIFF.
- WMF is commonly used in vector workflows.
When to use MIFF
- Your target workflow expects MIFF.
- Improve delivery compatibility with MIFF.
- MIFF is commonly used in image workflows.
FAQs
Why convert WMF to MIFF?
Convert to MIFF when ImageMagick or a related processing stack is the main consumer and you want a tool-native working format.
It is useful as an intermediate in automated imaging pipelines.
What changes when converting WMF to MIFF?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to MIFF removes vector scaling.
What should I review after converting WMF to MIFF?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.