Convert anything, at global scale.
200+ formats and automation APIs that feels instant.
CONVERT
From
To
Drop files or choose a source
Upload multiple files at once, mix formats, and fine-tune every conversion with format-aware settings.
Max 2GB per file · Drag & drop ready · Mixed file types welcome
CRW at a glance
CRW
Convert to CRW when maintaining compatibility with older Canon raw libraries or recovering historical camera originals.
In most current workflows it is a source to preserve or migrate, not a preferred new output format.
MOBI at a glance
MOBI
Convert to MOBI when the destination involves older Kindle-compatible devices, legacy ebook libraries, or compatibility requirements tied to older handheld readers.
It is useful as a bridge format during migration.
For new general-purpose ebook publishing, EPUB or newer Kindle-targeted formats are usually better.
Format comparison
| Feature | CRW | MOBI |
|---|---|---|
| File type | Image | Ebook |
| Extensions |
|
|
| MIME type |
|
|
| Compression / quality | raw | reflowable |
| File size characteristics | large | small |
| Compatibility | limited | moderate |
| Editability | high | moderate |
| Created year | 2000 | 2000 |
| Inventor | Canon | Mobipocket |
| Status | proprietary | active |
| Primary use cases |
|
|
| Common software |
|
|
| Archival suitability | strong | moderate |
| Metadata handling | rich | moderate |
| Delivery profile | limited | strong |
| Workflow fit | source | reading |
When to use each format
When to use CRW
- capture ingest
- editing
- web or print delivery
- Preserve capture-stage sensor information.
When to use MOBI
- ebook publishing
- reader distribution
- digital libraries
- Historically important in early ebook delivery.
FAQs
Why convert CRW to MOBI?
Convert to MOBI when the destination involves older Kindle-compatible devices, legacy ebook libraries, or compatibility requirements tied to older handheld readers.
It is useful as a bridge format during migration.
For new general-purpose ebook publishing, EPUB or newer Kindle-targeted formats are usually better.
What changes when converting CRW to MOBI?
This conversion changes how the format behaves in downstream tools and delivery environments.
Size profile changes from large in CRW to small in MOBI. Quality profile changes from raw in CRW to reflowable in MOBI. Editability profile changes from high in CRW to moderate in MOBI. Compatibility profile changes from limited in CRW to moderate in MOBI. Archival profile changes from strong in CRW to moderate in MOBI. Metadata profile changes from rich in CRW to moderate in MOBI. Delivery profile changes from limited in CRW to strong in MOBI. Workflow profile changes from source in CRW to reading in MOBI.
What should I review after converting CRW to MOBI?
Check the exported file for Amazon no longer accepts MOBI for new KDP uploads.; Modern open publishing workflows usually prefer EPUB or newer Kindle-oriented formats..