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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.
PAM at a glance
PAM
PBM, PGM, PPM, PNM, and later PAM come from the tool-centric tradition of keeping image interchange formats easy to parse, script, and transform.
Format comparison
| Feature | Xfig | PAM |
|---|---|---|
| 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 | 2000 |
| Inventor | Supoj Sutanthavibul | Jef Poskanzer / Netpbm lineage |
| 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 PAM
- capture ingest
- editing
- web or print delivery
- Very simple to parse and generate.
FAQs
Why convert Xfig to PAM?
Choose PAM as target when using Unix-style image tools or scripted workflows that benefit from a simple, explicit raster container with more flexibility than PBM/PGM/PPM.
What changes when converting Xfig to PAM?
Convert to PAM when using Unix-style image tools or scripted workflows that benefit from a simple, explicit raster container with more flexibility than PBM/PGM/PPM. It is useful as an intermediate technical format.
What should I review after converting Xfig to PAM?
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; Weak fit for polished consumer delivery.
How can I keep quality stable in Xfig to PAM conversion?
Run representative samples, keep settings deterministic, and monitor these risks: Limited metadata and presentation expectations compared with richer formats; Weak fit for polished consumer delivery; Validate destination compatibility before large-batch conversion.