Audio

Browser Audio Converter

Convert audio locally for podcasts and voice notes. Processing stays on your device.

How to Use

  1. Upload an audio file the browser can decode.
  2. Choose an output format (WAV and MP3 when available).
  3. Convert and download — no cloud processing.

Key Features & Privacy Advantage

  • All processing happens locally in your browser. Your files are never uploaded to a server.
  • Web Audio API decoding.
  • WAV export built-in; MP3 via lamejs when loaded.
  • Private conversion for voice notes and drafts.

Technical Breakdown

The Web Audio API can decode many container/codec combinations into PCM. We re-encode to WAV natively and optionally to MP3 with a WASM/JS encoder so drafts never hit a media SaaS.

Browser codec support varies. If decode fails, try exporting WAV from your recorder first.

Frequently Asked Questions

Is audio uploaded?

No. All processing happens locally in your browser. Your files are never uploaded to a server.

Which outputs work?

WAV always; MP3 when the encoder library loads successfully.

Can I convert long podcasts?

Yes, but large files use more memory. Shorter clips convert faster.

Does quality change?

Re-encoding can change fidelity. Prefer WAV as a lossless intermediate when editing.