Version 1.2.1 — Compatible with top browsers

LAGSYNC

The professional standard for fixing Bluetooth audio delay on any website. Sub-millisecond precision for the perfect watch party.

Install now See other browsers
LagSync promo tile
Install LagSync — Chrome Web Store

Install LagSync

Chrome
Chrome
v1.2.1 — Live
 Firefox
Firefox
v1.2.1 — Live
 Edge
Edge
v1.2.1 — Live
 Safari
Safari
Coming Soon
 Brave
Brave
v1.2.1 — Live

See LagSync in Action

Featured promo and interactive screenshots — click any image to open a full-size viewer.

LagSync promotional tile - Install the extension now from the web store
Promotional tile — Install now
LagSync YouTube integration with perfect lip-sync settings optimized for streaming sites
Perfect lip-sync — settings optimized for streaming sites
LagSync audio codec presets including aptX, AAC, SBC, and High quality options
Smart headset presets — aptX · AAC · SBC · High
LagSync privacy policy - local processing, no tracking, no ads
Privacy-first — local processing, no tracking, no ads
LagSync universal compatibility - sync audio on any website
Universal compatibility — sync audio on any website
01

MSE Hooking

Intercepts SourceBuffer for smooth, ramped audio sync on YouTube, Netflix, and others.

02

Web Audio Fallback

For non-streaming sites, a Web Audio DelayNode handles the audio offset when MSE isn't available.

03

One-Click Presets

Built-in profiles for aptX (40ms), AAC (120ms), SBC (180ms), and High (300ms) — all editable to match your setup.