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VML in het kort
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.
PNM in het kort
PNM
PBM, PGM, PPM, PNM, and later PAM come from the tool-centric tradition of keeping image interchange formats easy to parse, script, and transform.
Formaatvergelijking
| Kenmerk | VML | PNM |
|---|---|---|
| File type | Vector | Image |
| Extensions |
|
|
| MIME type |
|
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| Created year | 1998 | 1988 |
| Inventor | Microsoft, Macromedia, Autodesk, Hewlett-Packard, Visio | Jef Poskanzer / Netpbm lineage |
| Status | legacy | active |
| Transparency | Niet ondersteund | Niet ondersteund |
| Animation | Niet ondersteund | Niet ondersteund |
| Primary use cases |
|
|
| Layer support | Niet ondersteund | Niet ondersteund |
| Vector scaling | Ondersteund | Niet ondersteund |
Wanneer je elk formaat gebruikt
When to use VML
- Your source file is already in VML.
- Preserve source expectations before exporting to PNM.
- VML is commonly used in vector workflows.
When to use PNM
- Your target workflow expects PNM.
- Improve delivery compatibility with PNM.
- PNM is commonly used in image workflows.
Veelgestelde vragen
Why convert VML to PNM?
Convert to PNM when you need a plain, easily processed raster format for scripts, research, or utility pipelines.
It is useful as an intermediate representation in technical imaging workflows.
What changes when converting VML to PNM?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to PNM removes vector scaling.
What should I review after converting VML to PNM?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.