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CRW at a glance
CRW
Early Canon digital-camera workflows used raw formats like CRW before the later EOS raw families stabilized around CR2 and then CR3.
JP2 at a glance
JP2
JPEG 2000 arrived as a major standards effort to improve on classic JPEG, but its practical adoption concentrated in specialist domains rather than in the universal browser-and-camera role held by JPEG.
Format comparison
| Feature | CRW | JP2 |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2000 | 2000 |
| Inventor | Canon | Joint Photographic Experts Group |
| Status | proprietary | active |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Layer support | Not supported | Not supported |
| Vector scaling | Not supported | Supported |
| Camera raw data | Supported | Not supported |
| HDR support | Not supported | Not supported |
| Streaming ready | Not supported | Not supported |
When to use each format
When to use CRW
- Your source file is already in CRW.
- Preserve source expectations before exporting to JP2.
- CRW is commonly used in image workflows.
When to use JP2
- Your target workflow expects JP2.
- Improve delivery compatibility with JP2.
- JP2 is commonly used in image workflows.
FAQs
Why convert CRW to JP2?
Convert to JP2 when image preservation, high bit depth, or institutional-quality digitization matter more than ordinary browser ubiquity.
It is a strong target for archival masters and specialist imaging repositories.
What changes when converting CRW to JP2?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to JP2 adds vector scaling. Moving to JP2 removes camera raw data.
What should I review after converting CRW to JP2?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.