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AI at a glance
AI
Adobe co-founder John Warnock created Illustrator in late 1986 to automate many of the manual tasks used by his wife Marva, a graphic designer. It was a commercialization of Adobe's in-house font development software and PostScript file format.
PGM at a glance
PGM
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 | AI | PGM |
|---|---|---|
| File type | Vector | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1987 | 1988 |
| Inventor | Adobe Systems | Jef Poskanzer / Netpbm lineage |
| Status | active | active |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Layer support | Supported | Not supported |
| Vector scaling | Supported | Not supported |
When to use each format
When to use AI
- Your source file is already in AI.
- Preserve source expectations before exporting to PGM.
- AI is commonly used in vector workflows.
When to use PGM
- Your target workflow expects PGM.
- Improve delivery compatibility with PGM.
- PGM is commonly used in image workflows.
FAQs
Why convert AI to PGM?
Convert to PGM when you need a straightforward grayscale raster for scripting, research, or low-overhead image processing.
It is a good target for technical pipelines and intermediate data exchange.
What changes when converting AI to PGM?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to PGM removes layer support. Moving to PGM removes vector scaling.
What should I review after converting AI to PGM?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.