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Xfig at a glance
Xfig
Xfig began in 1985 and accumulated decades of maintenance and export tooling, which made the .fig format a durable bridge between interactive diagram editing on Unix systems and downstream conversion to PostScript, PDF, and other outputs.
SVGZ at a glance
SVGZ
SVG was developed by the W3C SVG Working Group starting in 1998, after six competing vector graphics submissions. SVG 1.0 became a W3C Recommendation on 4 September 2001, with SVGZ as the compressed variant.
Format comparison
| Feature | Xfig | SVGZ |
|---|---|---|
| File type | Vector | Vector |
| Extensions |
|
|
| MIME type |
|
|
| Compression / quality | scalable | scalable |
| File size characteristics | small | small |
| Compatibility | moderate | moderate |
| Editability | high | high |
| Created year | 1985 | 2001 |
| Inventor | Supoj Sutanthavibul | World Wide Web Consortium (W3C) |
| Status | legacy | active |
| 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 Xfig
- illustration
- diagramming
- brand asset delivery
- Preserves object-level editability for technical diagrams.
When to use SVGZ
- illustration
- diagramming
- brand asset delivery
- Significantly smaller than uncompressed SVG.
FAQs
Why convert Xfig to SVGZ?
Choose SVGZ as target when you need SVG semantics but want the file itself stored or transmitted in compressed form.
What changes when converting Xfig to 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.
What should I review after converting Xfig to SVGZ?
After conversion, review these destination checks: Open converted output in Adobe Illustrator and verify behavior on real samples; Compare output against the expected scalable quality profile; Not human-readable without decompression.
How can I keep quality stable in Xfig to SVGZ conversion?
Run representative samples, keep settings deterministic, and monitor these risks: Requires correct HTTP headers for web delivery; Not human-readable without decompression; Validate destination compatibility before large-batch conversion.