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XUL at a glance
XUL
Legacy Firefox/Mozilla application development, XUL extension migration to WebExtensions, and Mozilla platform interface documentation.
DCR at a glance
DCR
Convert to DCR when preserving compatibility with an older camera-specific raw workflow or recovering legacy photographic originals.
In current practice it is mainly an archival and migration target.
Format comparison
| Feature | XUL | DCR |
|---|---|---|
| File type | Document | Image |
| Extensions |
|
|
| MIME type |
|
|
| Compression / quality | depends | raw |
| File size characteristics | medium | large |
| Compatibility | broad | limited |
| Editability | moderate | high |
| Created year | 1999 | 2004 |
| Inventor | Mozilla (David Hyatt, others) | Kodak |
| Status | legacy | proprietary |
| Primary use cases |
|
|
| Common software |
|
|
| Archival suitability | strong | strong |
| Metadata handling | moderate | rich |
| Delivery profile | strong | limited |
| Workflow fit | exchange | source |
| Vector scaling | Not supported | Not supported |
When to use each format
When to use XUL
- authoring
- review and collaboration
- distribution
- Enabled declarative cross-platform UI construction inside the Mozilla ecosystem.
When to use DCR
- capture ingest
- editing
- web or print delivery
- Preserve capture-stage image data for later interpretation.
FAQs
Why convert XUL to DCR?
Convert to DCR when preserving compatibility with an older camera-specific raw workflow or recovering legacy photographic originals.
In current practice it is mainly an archival and migration target.
What changes when converting XUL to DCR?
This conversion changes how the format behaves in downstream tools and delivery environments.
Size profile changes from medium in XUL to large in DCR. Quality profile changes from depends in XUL to raw in DCR. Editability profile changes from moderate in XUL to high in DCR. Compatibility profile changes from broad in XUL to limited in DCR. Metadata profile changes from moderate in XUL to rich in DCR. Delivery profile changes from strong in XUL to limited in DCR. Workflow profile changes from exchange in XUL to source in DCR.
What should I review after converting XUL to DCR?
Check the exported file for Many are vendor-specific and poorly documented publicly.; Compatibility often depends on decoder support in tools such as LibRaw, Adobe Camera Raw, or vendor software.; They are source formats, not publication-ready outputs..