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ORA at a glance
ORA
OpenRaster emerged from the libre graphics community as a practical answer to the lack of a clean open interchange format for layered raster artwork.
BMP at a glance
BMP
Bitmap and device-independent bitmap structures became part of the Windows graphics story early in the platform's life, which is why BMP still appears in older desktop workflows and low-friction image interchange tasks.
Format comparison
| Feature | ORA | BMP |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2006 | 1990 |
| Inventor | Libre Graphics community | Microsoft |
| Status | active | active |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Layer support | Supported | Not 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 ORA
- Your source file is already in ORA.
- Preserve source expectations before exporting to BMP.
- ORA is commonly used in image workflows.
When to use BMP
- Your target workflow expects BMP.
- Improve delivery compatibility with BMP.
- BMP is commonly used in image workflows.
FAQs
Why convert ORA to BMP?
Convert to BMP when a Windows-oriented tool, legacy application, or device explicitly expects simple bitmap input.
It is useful for compatibility, debugging image pipelines, and straightforward raster exchange where file size is not the priority.
What changes when converting ORA to BMP?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to BMP removes layer support.
What should I review after converting ORA to BMP?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.