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JPG at a glance
JPG
The JPEG standard was developed by the Joint Photographic Experts Group and standardized through ITU-T and ISO/IEC in the early 1990s.
DNG at a glance
DNG
DNG emerged when professional photo workflows were already fragmented across many undocumented vendor raw formats. Adobe positioned it as a common archival and interchange option rather than just another camera-native format.
Format comparison
| Feature | JPG | DNG |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1992 | 2004 |
| Inventor | Joint Photographic Experts Group | Adobe |
| Status | active | 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 | Not supported | Supported |
| HDR support | Not supported | Not supported |
| Streaming ready | Not supported | Not supported |
When to use each format
When to use JPG
- Your source file is already in JPG.
- Preserve source expectations before exporting to DNG.
- JPG is commonly used in image workflows.
When to use DNG
- Your target workflow expects DNG.
- Improve delivery compatibility with DNG.
- DNG is commonly used in image workflows.
FAQs
Why convert JPG to DNG?
Convert to DNG when you need a standardized raw master for archival storage, cross-tool editing, or camera-original normalization.
It is a strong target when long-term raw accessibility matters.
What changes when converting JPG to DNG?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to DNG adds camera raw data.
What should I review after converting JPG to DNG?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.