Looper Pedal Online — 4-Track Browser Loop Station

A looper pedal is a device musicians use to record a short phrase — a vocal hook, a guitar riff, a drum pattern — and then play it back in a perfect loop while they perform another part on top. The classic hardware example is the Boss RC-505 (vocal looper) or the Boss RC-300 (pedalboard). An online looper pedal does the same thing in your browser using the Web Audio API: the mic captures raw PCM samples, the tool stores them in an audio buffer, and a scheduler plays the buffer back on a sample-accurate clock so the loop seam is inaudible and multiple tracks stay locked together.

A microphone — yes. A plugin — no. The tool uses your browser’s built-in audio APIs, which are supported in Chrome, Edge, Safari, and Firefox on desktop. The first time you press record you’ll be asked to grant microphone permission. Once granted, everything runs locally in the tab — your audio never leaves your device, and there’s no signup, no account, no upload.

Free Mode is the easy default: you press record, play whatever you want, press stop, and that recording becomes your loop. Whatever length you played, that’s the loop length. Tracks 2, 3, and 4 will snap to multiples of that first loop, so they stay in sync without you having to think about it. Tempo Lock Mode is the strict mode: you set the BPM (60-180) and the number of bars you want to loop (1, 2, 4, or 8), and the tool gives you a four-beat count-in click before recording arms. Your recording snaps to a sample-accurate bar grid regardless of when you actually pressed the button. Use Free for jamming, Tempo Lock for production.

When you press record in Tempo Lock Mode, you’ll hear four click sounds at your chosen BPM — one accented click on beat 1, three softer clicks on 2, 3, 4. On the imagined beat 5 (which is beat 1 of the next bar), recording starts. Anything you played during the count-in is discarded; only audio from the moment recording arms onward is captured. Recording also stops automatically at the end of your chosen bar count, so if you set 4 bars at 100 BPM, you get exactly 9.6 seconds of recorded audio — no manual stop, no length surprises.

Yes. Once a channel has a loop on it, pressing the channel’s primary button again puts you into overdub: the original loop keeps playing while you record a new pass on top of it. Both layers play together when you stop. You can keep stacking layers on the same channel — the layer count badge shows how many takes that channel is holding. If you want to start over, hit Clear instead.

Each channel tile has a small MUTE button next to its main control. Tapping it silences the channel — but not instantly: the gain ramps down at the next bar boundary so the mute lands musically (no click). Tap mute again to bring the channel back in, also at the next bar. To wipe a channel completely and start fresh, long-press the CLEAR button (the long-press prevents accidental wipes of a take you spent five minutes on).

Desktop-first. The audio engine relies on Web Audio API features (AudioWorklet, getUserMedia with all the noise-processing flags disabled) that work most reliably on Chrome, Edge, Safari, and Firefox on a laptop or desktop. Mobile browsers technically support the APIs but have quirks around microphone activation gestures and worklet module loading that can make recording flaky — especially on older iOS. If you’re looping seriously, use desktop. Mobile support is on the roadmap once iOS Safari behavior is more predictable.

Yes. The Export Mix button at the bottom mixes all four channels (skipping muted ones) into a single WAV file and downloads it to your machine. From there you can import it into any DAW — GarageBand, FL Studio, Ableton, Logic, Reaper — and build a full arrangement around it. Or upload it to a music generator and let AI fill out the production around your loop.