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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.
HEIC at a glance
HEIC
HEIC became widely recognized when Apple adopted HEIF-based image storage in its consumer ecosystem, turning a standards-driven container family into an everyday format users actually encountered.
Format comparison
| Feature | CRW | HEIC |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2000 | 2015 |
| Inventor | Canon | MPEG and Nokia HEIF contributors |
| 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 | Not 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 HEIC.
- CRW is commonly used in image workflows.
When to use HEIC
- Your target workflow expects HEIC.
- Improve delivery compatibility with HEIC.
- HEIC is commonly used in image workflows.
FAQs
Why convert CRW to HEIC?
Convert to HEIC when you want compact, high-quality still images in modern photo ecosystems, especially for mobile-first capture and storage.
It is useful when size efficiency matters and the receiving environment supports HEIF-family formats well.
What changes when converting CRW to HEIC?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to HEIC removes camera raw data.
What should I review after converting CRW to HEIC?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.