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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.
PNM Raw at a glance
PNM Raw
PNM survived because engineers kept needing a no-drama raster family for scripts, fixtures, codecs, and image-processing experiments where the format should not be the hard part.
Format comparison
| Feature | Xfig | PNM Raw |
|---|---|---|
| File type | Vector | Image |
| Extensions |
|
|
| MIME type |
|
|
| Compression / quality | scalable | depends |
| File size characteristics | small | medium |
| Compatibility | moderate | broad |
| Editability | high | moderate |
| Created year | 1985 | 1988 |
| Inventor | Supoj Sutanthavibul | Jef Poskanzer |
| Status | legacy | active |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Common software |
|
|
| Archival suitability | good | moderate |
| Metadata handling | moderate | moderate |
| Delivery profile | strong | strong |
| Workflow fit | design | delivery |
| Layer support | Not supported | Not supported |
| Vector scaling | Supported | Not 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 PNM Raw
- capture ingest
- editing
- web or print delivery
- Tiny conceptual overhead for binary raster interchange.
FAQs
Why convert Xfig to PNM Raw?
Choose PNM Raw as target when you need a no-frills lossless raster format for scripts, benchmarking, image-processing experiments, or toolchains that prefer direct pixel access with minimal container complexity.
What changes when converting Xfig to PNM Raw?
Convert to PNM raw when you need a no-frills lossless raster format for scripts, benchmarking, image-processing experiments, or toolchains that prefer direct pixel access with minimal container complexity. It is especially useful as an intermediate representation between automated processing steps.
What should I review after converting Xfig to PNM Raw?
After conversion, review these destination checks: Open converted output in Netpbm and verify behavior on real samples; Compare output against the expected depends quality profile; PNM itself is a family label more than one precise image syntax.
How can I keep quality stable in Xfig to PNM Raw conversion?
Run representative samples, keep settings deterministic, and monitor these risks: Poor fit for consumer delivery and rich metadata; PNM itself is a family label more than one precise image syntax; Validate destination compatibility before large-batch conversion.