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SGI at a glance
SGI
Convert to SGI when recovering or maintaining compatibility with workstation-era graphics assets and archives.
It is useful mainly for migration, restoration, and historical graphics interoperability.
WMF at a glance
WMF
Convert to WMF when preserving compatibility with older Windows document workflows, embedded legacy graphics, or archive recovery tasks where that classic metafile format is still expected.
It is useful as a bridge for historical Office-era vector assets.
For contemporary vector exchange, EMF, SVG, or PDF are usually more practical.
Format comparison
| Feature | SGI | WMF |
|---|---|---|
| File type | Image | Vector |
| Extensions |
|
|
| MIME type |
|
|
| Compression / quality | depends | scalable |
| File size characteristics | medium | small |
| Compatibility | broad | moderate |
| Editability | moderate | high |
| Created year | 1990 | 1990 |
| Inventor | Silicon Graphics Inc. | Microsoft Corporation |
| Status | legacy | legacy |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Common software |
|
|
| Archival suitability | moderate | good |
| Metadata handling | moderate | moderate |
| Delivery profile | strong | strong |
| Workflow fit | delivery | design |
| Layer support | Not supported | Not supported |
| Vector scaling | Not supported | Supported |
When to use each format
When to use SGI
- capture ingest
- editing
- web or print delivery
- Important for long-tail compatibility and archival conversion.
When to use WMF
- illustration
- diagramming
- brand asset delivery
- Universal recognition in Windows applications.
FAQs
Why convert SGI to WMF?
Convert to WMF when preserving compatibility with older Windows document workflows, embedded legacy graphics, or archive recovery tasks where that classic metafile format is still expected.
It is useful as a bridge for historical Office-era vector assets.
For contemporary vector exchange, EMF, SVG, or PDF are usually more practical.
What changes when converting SGI to WMF?
This conversion changes how the format behaves in downstream tools and delivery environments.
Size profile changes from medium in SGI to small in WMF. Quality profile changes from depends in SGI to scalable in WMF. Editability profile changes from moderate in SGI to high in WMF. Compatibility profile changes from broad in SGI to moderate in WMF. Archival profile changes from moderate in SGI to good in WMF. Workflow profile changes from delivery in SGI to design in WMF.
Moving to WMF adds vector scaling.
What should I review after converting SGI to WMF?
Check the exported file for 16-bit format with limited precision.; Not truly device-independent without placeable header.; Security vulnerabilities have been discovered historically..