AU Won't Open? Convert to PAF Instantly
Fast, instant AU to PAF conversion. No signup required. Just drop your .au file and get .paf in seconds.
Batch Settings
About AU to PAF Conversion
Dealing with a AU file that won't open on your device? You're not alone — AU compatibility issues are one of the most common reasons people search for a file converter. AU is a widely used file format.
The fix is simple: convert your AU to PAF. PAF is a widely used file format. This conversion lets you convert between formats quickly, solving the problem in seconds rather than hours of troubleshooting.
Converting AU to PAF maintains high quality with CocoConvert's optimised encoder settings.
CocoConvert processes your AU file on secure servers in Germany — upload, convert, download. Your files are encrypted via TLS and automatically deleted within 24 hours. No account needed, no software to install, and it works on any device with a browser.
This conversion is ideal when you When you need a PAF file.
The conversion engine behind CocoConvert uses FFmpeg, Sharp, and qpdf — the same open-source libraries trusted by Netflix, YouTube, and enterprise platforms. Pro users can batch convert up to 100 files at once.
How to Convert AU to PAF
- 1
Add your AU file
Drag and drop your .au file into the converter, or tap "Browse" to pick it from your device. Multiple files are supported for batch processing.
- 2
Pick PAF output
Select .paf as the target format. CocoConvert automatically applies the best quality settings for this conversion.
- 3
Start conversion
Hit the Convert button. The audio engine processes your file server-side — no CPU drain on your device.
- 4
Save your file
Once done, download your .paf file. For batch jobs, download all at once as a zip.
What Happens When You Convert AU to PAF
Your AU file is decoded and re-encoded as PAF.
Your AU file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in PAF format
The converted file is ready for download
Format Comparison
AU
.au file
| Extension | .au |
| MIME Type | audio/basic |
| Category | Audio |
PAF
.paf file
| Extension | .paf |
| MIME Type | audio/x-paf |
| Category | Audio |
Should You Convert AU to PAF?
When to Convert
- ✓When you need a PAF file
Frequently Asked Questions
Why won't my AU file open?
AU files may not open if your device lacks the right codec or application. Converting to PAF — a more widely supported format — usually resolves this. PAF is a widely used file format.
Is it safe to convert AU to PAF online?
Yes. CocoConvert encrypts your file via TLS, processes it on isolated servers in Germany, and permanently deletes it within 24 hours. Your files are never shared or analysed.
Will I lose quality converting AU to PAF?
Converting AU to PAF maintains high quality with CocoConvert's optimised encoder settings. CocoConvert uses high-quality encoder defaults to preserve as much fidelity as possible.
How large can my AU file be?
Free users can convert files up to 250 MB each. Pro users get a 5 GB limit per file, and Business API users have custom limits.
Can I convert AU to PAF on my phone?
Absolutely. CocoConvert works in any modern browser — iOS Safari, Android Chrome, and all desktop browsers. No app required.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.