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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.
PFM at a glance
PFM
These formats persist in engineering, compression research, and conversion-tool contexts where simple sample storage or adjunct technical representation is useful.
Format comparison
| Feature | VML | PFM |
|---|---|---|
| File type | Vector | Image |
| Extensions |
|
|
| MIME type |
|
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| Created year | 1998 | 1995 |
| Inventor | Microsoft, Macromedia, Autodesk, Hewlett-Packard, Visio | Paul Debevec |
| Status | legacy | active |
| 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 PFM.
- VML is commonly used in vector workflows.
When to use PFM
- Your target workflow expects PFM.
- Improve delivery compatibility with PFM.
- PFM is commonly used in image workflows.
FAQs
Why convert VML to PFM?
Convert to PFM when high-precision floating-point image data must survive for rendering, HDR processing, or technical analysis.
It is useful as a working format in graphics and research pipelines.
What changes when converting VML to PFM?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to PFM removes vector scaling.
What should I review after converting VML to PFM?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.