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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.
PTX at a glance
PTX
Digital photography fragmented into many manufacturer-specific raw formats because camera makers optimized for their own sensors, metadata, and software ecosystems rather than for one shared public raw standard.
Format comparison
| Feature | WMF | PTX |
|---|---|---|
| File type | Vector | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1990 | 2005 |
| Inventor | Microsoft Corporation | Pentax (now Ricoh) |
| 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 PTX.
- WMF is commonly used in vector workflows.
When to use PTX
- Your target workflow expects PTX.
- Improve delivery compatibility with PTX.
- PTX is commonly used in image workflows.
FAQs
Why convert WMF to PTX?
Convert to PTX when preserving compatibility with an existing proprietary capture archive or working inside a specialist workflow that still expects it.
It is mainly an archival and migration format.
What changes when converting WMF to PTX?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to PTX removes vector scaling.
What should I review after converting WMF to PTX?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.