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MIFF at a glance
MIFF
MIFF reflects the older tradition of image-processing toolkits defining their own native technical formats for fidelity and internal workflow convenience.
PSB at a glance
PSB
Photoshop's native format became one of the de facto interchange anchors of raster design and retouching, even outside Adobe-only teams, because so many creative pipelines converged around its feature set.
Format comparison
| Feature | MIFF | PSB |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1990 | 1990 |
| Inventor | ImageMagick | Adobe |
| Status | proprietary | proprietary |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Layer support | Not supported | Supported |
| Vector scaling | Not supported | Not supported |
| Camera raw data | Not supported | Not supported |
| HDR support | Not supported | Not supported |
| Streaming ready | Not supported | Not supported |
When to use each format
When to use MIFF
- Your source file is already in MIFF.
- Preserve source expectations before exporting to PSB.
- MIFF is commonly used in image workflows.
When to use PSB
- Your target workflow expects PSB.
- Improve delivery compatibility with PSB.
- PSB is commonly used in image workflows.
FAQs
Why convert MIFF to PSB?
Convert to PSB when the image must remain editable in Photoshop at very large dimensions or layer counts.
It is useful for oversized composites, print backdrops, and complex production artwork.
What changes when converting MIFF to PSB?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to PSB adds layer support.
What should I review after converting MIFF to PSB?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.