Convert anything, at global scale.
200+ formats and automation APIs that feels instant.
CONVERT
From
To
Drop files or choose a source
Upload multiple files at once, mix formats, and fine-tune every conversion with format-aware settings.
Max 2GB per file · Drag & drop ready · Mixed file types welcome
AUDIO
BPG to AU Converter — Free, Online, No Signup
Convert BPG files to AU online with no signup required.
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.
AU at a glance
AU
AU belongs to an earlier multimedia era where workstation and Unix vendors often had their own practical audio defaults.
Format comparison
| Feature | BPG | AU |
|---|---|---|
| File type | Image | Audio |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2014 | 1987 |
| Inventor | Fabrice Bellard | Sun Microsystems |
| Status | active | active |
| Primary use cases |
|
|
| HDR support | Supported | Not supported |
| Streaming ready | Not supported | Not supported |
When to use each format
When to use BPG
- Your source file is already in BPG.
- Preserve source expectations before exporting to AU.
- BPG is commonly used in image workflows.
When to use AU
- Your target workflow expects AU.
- Improve delivery compatibility with AU.
- AU is commonly used in audio workflows.
FAQs
Why convert BPG to AU?
Convert to AU when preserving compatibility with older Unix or workstation software, educational assets, or historical multimedia archives.
In most present-day workflows the practical task is to decode AU content and move it to WAV, AIFF, or a modern compressed format.
Use AU only when downstream compatibility makes it necessary.
What changes when converting BPG to AU?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to AU removes HDR content.
What should I review after converting BPG to AU?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.