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SVGZ at a glance
SVGZ
Convert to SVGZ when you need SVG semantics but want the file itself stored or transmitted in compressed form.
It is most useful for web asset pipelines, map layers, and technical graphics repositories where vector fidelity matters and pre-compressed files are already part of the deployment model.
If the downstream environment already applies gzip or brotli to ordinary SVG responses, plain SVG is often easier to work with.
Choose SVGZ when the consumer explicitly expects it or when archived asset size is worth prioritizing.
VML at a glance
VML
Convert to or from VML when migrating legacy Office drawings, cleaning up IE-era web content, or translating Microsoft-specific vector markup into SVG, PNG, or modern document formats.
It is mainly a bridge format for archival recovery and standards migration.
Format comparison
| Feature | SVGZ | VML |
|---|---|---|
| File type | Vector | Vector |
| Extensions |
|
|
| MIME type |
|
|
| Compression / quality | scalable | scalable |
| File size characteristics | small | small |
| Compatibility | moderate | moderate |
| Editability | high | high |
| Created year | 2001 | 1998 |
| Inventor | World Wide Web Consortium (W3C) | Microsoft, Macromedia, Autodesk, Hewlett-Packard, Visio |
| Status | active | legacy |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Common software |
|
|
| Archival suitability | good | good |
| Metadata handling | moderate | moderate |
| Delivery profile | strong | strong |
| Workflow fit | design | design |
| Layer support | Not supported | Not supported |
| Vector scaling | Supported | Supported |
| Structured data | Supported | Supported |
When to use each format
When to use SVGZ
- illustration
- diagramming
- brand asset delivery
- Significantly smaller than uncompressed SVG.
When to use VML
- illustration
- diagramming
- brand asset delivery
- Designed to preserve editable vector and text semantics.
FAQs
Why convert SVGZ to VML?
Convert to or from VML when migrating legacy Office drawings, cleaning up IE-era web content, or translating Microsoft-specific vector markup into SVG, PNG, or modern document formats.
It is mainly a bridge format for archival recovery and standards migration.
What changes when converting SVGZ to VML?
This conversion changes how the format behaves in downstream tools and delivery environments.
What should I review after converting SVGZ to VML?
Check the exported file for Never became the durable open web vector standard.; Primarily a compatibility and migration concern today..