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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.
PSB at a glance
PSB
Photoshop's native format became one of the de facto interchange anchors of raster design and retouching, even outside Adobe-only teams, because so many creative pipelines converged around its feature set.
Format comparison
| Feature | VML | PSB |
|---|---|---|
| File type | Vector | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1998 | 1990 |
| Inventor | Microsoft, Macromedia, Autodesk, Hewlett-Packard, Visio | Adobe |
| Status | legacy | proprietary |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Layer support | Not supported | 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 PSB.
- VML is commonly used in vector workflows.
When to use PSB
- Your target workflow expects PSB.
- Improve delivery compatibility with PSB.
- PSB is commonly used in image workflows.
FAQs
Why convert VML to PSB?
Convert to PSB when the image must remain editable in Photoshop at very large dimensions or layer counts.
It is useful for oversized composites, print backdrops, and complex production artwork.
What changes when converting VML to PSB?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to PSB adds layer support. Moving to PSB removes vector scaling.
What should I review after converting VML to PSB?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.