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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.
JBIG2 at a glance
JBIG2
JBIG and JBIG2 belong to the branch of imaging standards aimed at scanned monochrome or mostly bitonal content rather than rich photographic colour imaging.
Format comparison
| Feature | WMF | JBIG2 |
|---|---|---|
| File type | Vector | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1990 | 2000 |
| Inventor | Microsoft Corporation | Joint Bi-level Image Experts Group |
| 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 WMF
- Your source file is already in WMF.
- Preserve source expectations before exporting to JBIG2.
- WMF is commonly used in vector workflows.
When to use JBIG2
- Your target workflow expects JBIG2.
- Improve delivery compatibility with JBIG2.
- JBIG2 is commonly used in image workflows.
FAQs
Why convert WMF to JBIG2?
Convert to JBIG2 when optimizing scanned monochrome documents, forms, or page archives for storage and distribution.
It is ideal for document-heavy imaging pipelines where file size matters and the source is mostly black-and-white content.
What changes when converting WMF to JBIG2?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to JBIG2 removes vector scaling.
What should I review after converting WMF to JBIG2?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.