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DJVU at a glance
DJVU
DjVu became known in digitization and scanned-document communities as an alternative to PDF for certain image-centric archival and distribution tasks.
PEF at a glance
PEF
Pentax raw workflows never dominated the mass market, but their persistence in enthusiast and specialist photo libraries gives PEF ongoing practical relevance.
Format comparison
| Feature | DJVU | PEF |
|---|---|---|
| File type | Document | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1998 | 2006 |
| Inventor | AT&T Labs | Pentax (now Ricoh) |
| Status | active | proprietary |
| Primary use cases |
|
|
| Vector scaling | Not supported | Not supported |
When to use each format
When to use DJVU
- Your source file is already in DJVU.
- Preserve source expectations before exporting to PEF.
- DJVU is commonly used in document workflows.
When to use PEF
- Your target workflow expects PEF.
- Improve delivery compatibility with PEF.
- PEF is commonly used in image workflows.
FAQs
Why convert DJVU to PEF?
Convert to PEF when preserving Pentax camera originals or maintaining a Pentax-oriented raw workflow.
It is useful for archive masters and editable photographic captures.
What changes when converting DJVU to PEF?
This conversion changes how the format behaves in downstream tools and delivery environments.
What should I review after converting DJVU to PEF?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.