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ERF at a glance
ERF
Convert to ERF when preserving or restoring Epson-origin raw captures in an archive or compatibility workflow.
In most contemporary pipelines, it is a legacy source format to retain or migrate.
CDR at a glance
CDR
Convert to CDR when the recipient will continue editing or producing the artwork in CorelDRAW-based environments, especially in print, signage, or fabrication-adjacent workflows.
It is useful when native Corel compatibility is the priority.
For more neutral exchange, PDF, SVG, or EPS are usually easier handoff formats.
Format comparison
| Feature | ERF | CDR |
|---|---|---|
| File type | Image | Vector |
| Extensions |
|
|
| MIME type |
|
|
| Compression / quality | raw | scalable |
| File size characteristics | large | small |
| Compatibility | limited | moderate |
| Editability | high | high |
| Created year | 2004 | 1989 |
| Inventor | Epson | Corel Corporation |
| Status | proprietary | active |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Common software |
|
|
| Archival suitability | strong | good |
| Metadata handling | rich | moderate |
| Delivery profile | limited | strong |
| Workflow fit | source | design |
| Layer support | Not supported | Not supported |
| Vector scaling | Not supported | Supported |
When to use each format
When to use ERF
- capture ingest
- editing
- web or print delivery
- Preserve capture-stage image data for later interpretation.
When to use CDR
- illustration
- diagramming
- brand asset delivery
- Full-featured vector graphics format with rich toolset.
FAQs
Why convert ERF to CDR?
Convert to CDR when the recipient will continue editing or producing the artwork in CorelDRAW-based environments, especially in print, signage, or fabrication-adjacent workflows.
It is useful when native Corel compatibility is the priority.
For more neutral exchange, PDF, SVG, or EPS are usually easier handoff formats.
What changes when converting ERF to CDR?
This conversion changes how the format behaves in downstream tools and delivery environments.
Size profile changes from large in ERF to small in CDR. Quality profile changes from raw in ERF to scalable in CDR. Compatibility profile changes from limited in ERF to moderate in CDR. Archival profile changes from strong in ERF to good in CDR. Metadata profile changes from rich in ERF to moderate in CDR. Delivery profile changes from limited in ERF to strong in CDR. Workflow profile changes from source in ERF to design in CDR.
Moving to CDR adds vector scaling.
What should I review after converting ERF to CDR?
Check the exported file for Proprietary with no publicly available format specification.; Limited cross-application compatibility.; Older versions not fully readable by newer editors..