Auto Panner — Rhythmic Stereo Motion
Set the sweep rate, render, download as WAV.
Runs 100% in your browser — nothing is ever uploaded.
What is Auto Panner?
Add a rhythmic auto-pan effect that sweeps your audio between left and right at any rate. Free and 100% in your browser. Upload an audio file, tune the settings, preview the result and download it as a WAV file. It's completely free, works in any modern browser and requires no sign-up — everything runs locally on your device, so your data never leaves your computer.
How to use Auto Panner
- Open Auto Panner — it supports MP3, WAV, OGG, M4A and FLAC.
- Upload your audio file; it is decoded locally in your browser.
- Tune the settings, then click Process to render the result.
- Preview the output and download it as a WAV file.
Frequently asked questions
Is Auto Panner really free?
Yes — Auto Panner is 100% free with no limits, no watermarks and no registration. You can use it as often as you like, on as many files or inputs as you need.
Is my data safe when I use Auto Panner?
Absolutely. Auto Panner runs entirely in your browser using JavaScript — your input is processed on your own device and is never uploaded to any server.
Does Auto Panner work on mobile devices?
Yes. Auto Panner works in any modern browser on desktop, tablet and mobile (Chrome, Firefox, Safari, Edge) — there is no app to install.
Are my audio files uploaded?
Never. Your file is decoded and processed with the Web Audio API directly in your browser. It never touches a server — processing even works offline.
What formats can I upload and download?
Upload anything your browser can play: MP3, WAV, OGG, M4A/AAC and FLAC in most browsers. The processed result downloads as a high-quality WAV file.
Is it really free? Any length limit?
Completely free with no watermark. There is no hard length limit — a typical 3-5 minute song processes in seconds; very long files just need more memory.