# Gesture Synth

> Gesture Synth is a free online gesture synthesizer. Play music with both hands, shape chords and tone, and record performances locally in your browser.

Maintained by Cian. Updated 2026-08-05. Contact: a3011336204@gmail.com.

Gesture Synth is a free online gesture synthesizer that maps two-hand gestures to chords, voicing, octave, volume, and filter controls.

Camera frames and hand landmarks are processed locally with MediaPipe. Synth audio is generated with Web Audio. Optional recordings request microphone access and combine the live synth canvas with microphone and synth audio. Recordings remain local, download as MP4, and stop after five minutes. Recording does not request screen sharing or capture other tabs, windows, or the desktop.

No account, payment, database, media upload, or cloud recording is required.

How it works: https://www.gesturesynth.co/how-it-works
Compatibility: https://www.gesturesynth.co/compatibility
Camera permission help: https://www.gesturesynth.co/camera-permission-help
About the creator: https://www.gesturesynth.co/about
Contact: https://www.gesturesynth.co/contact
Privacy: https://www.gesturesynth.co/privacy-policy
Terms: https://www.gesturesynth.co/terms-of-service

Primary references:
- MediaPipe Hand Landmarker for web: https://ai.google.dev/edge/mediapipe/solutions/vision/hand_landmarker/web_js
- MDN getUserMedia: https://developer.mozilla.org/en-US/docs/Web/API/MediaDevices/getUserMedia
- MDN Web Audio API: https://developer.mozilla.org/en-US/docs/Web/API/Web_Audio_API
- MDN MediaRecorder: https://developer.mozilla.org/en-US/docs/Web/API/MediaRecorder