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AUDIO
CDR to AU Converter — Free, Online, No Signup
Convert CDR files to AU online with no signup required.
CDR at a glance
CDR
CorelDRAW was developed by Corel engineers Michel Bouillan and Pat Beirne in 1987 to bundle with Corel's desktop publishing systems. The inclusion of TrueType support in Windows 3.1 transformed CorelDRAW into a serious illustration program.
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 | CDR | AU |
|---|---|---|
| File type | Vector | Audio |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1989 | 1987 |
| Inventor | Corel Corporation | Sun Microsystems |
| Status | active | active |
| Primary use cases |
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When to use each format
When to use CDR
- Your source file is already in CDR.
- Preserve source expectations before exporting to AU.
- CDR is commonly used in vector 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 CDR 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 CDR to AU?
This conversion changes how the format behaves in downstream tools and delivery environments.
What should I review after converting CDR to AU?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.