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EXR at a glance
EXR
OpenEXR came from film-production needs at ILM and then evolved into an open industry format that spread across rendering, compositing, and broader high-end image pipelines.
BPG at a glance
BPG
BPG arrived in the mid-2010s when image engineers were looking for better post-JPEG compression before AVIF and JPEG XL had ecosystem momentum.
Format comparison
| Feature | EXR | BPG |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2003 | 2014 |
| Inventor | Industrial Light & Magic | Fabrice Bellard |
| Status | active | active |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Supported |
| Primary use cases |
|
|
| Layer support | Not supported | Not supported |
| Vector scaling | Not supported | Not supported |
| Camera raw data | Not supported | Not supported |
| HDR support | Supported | Supported |
| Streaming ready | Not supported | Not supported |
When to use each format
When to use EXR
- Your source file is already in EXR.
- Preserve source expectations before exporting to BPG.
- EXR is commonly used in image workflows.
When to use BPG
- Your target workflow expects BPG.
- Improve delivery compatibility with BPG.
- BPG is commonly used in image workflows.
FAQs
Why convert EXR to BPG?
High-efficiency image encoding for maximum compression at JPEG-class quality, image compression research, and specialized pipelines where HEVC infrastructure is available.
What changes when converting EXR to BPG?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to BPG adds animation support.
What should I review after converting EXR to BPG?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.