# LagSync - Bluetooth Audio Fix
> Fix audio and video delay caused by Bluetooth latency. Sync your sound perfectly on YouTube, Netflix, and HTML5 video to get perfect lip-sync.
Canonical page: [https://chrome-stats.com/d/lagsync-bluetooth-audio-fix](https://chrome-stats.com/d/lagsync-bluetooth-audio-fix)
## Overview
- **ID:** `lagsync-bluetooth-audio-fix`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Simon
- **Category:** photos-music-videos,games-entertainment
- **Daily users:** 186
- **Weekly downloads:** 38
- **Rating:** 3.83 / 5 (6 ratings)
- **Version:** 1.4.2
- **Last updated:** 2026-08-30
- **First published:** 2026-04-04
- **Size:** 126 KB
- **Data as of:** 2026-09-07
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/lagsync-bluetooth-audio-fix/)
- **Website:** [https://lagsync.com/help](https://lagsync.com/help)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/lagsync-bluetooth-audio-fix/privacy/](https://addons.mozilla.org/firefox/addon/lagsync-bluetooth-audio-fix/privacy/)
## Description
Fix Bluetooth audio delay on YouTube, Netflix, and more. Adjust sync in real-time for perfect lip-sync with your headphones.
STOP THE LIP-SYNC FRUSTRATION
Bluetooth headphones often suffer from noticeable latency, causing the audio to fall out of sync with the video. LagSync is a technical tool designed to fix this by letting you adjust the audio or video offset in real-time.
While optimized for YouTube and Netflix, LagSync is built to work on almost all standard HTML5 video players to ensure a perfectly synchronized viewing experience.
MAIN FEATURES
- Real-time Sync: Shift the audio offset instantly without refreshing the page or re-buffering.
- Broad Compatibility: Specialized hooks for major streaming platforms and universal support for HTML5 video.
- Precision Control: Fine-tune the delay in milliseconds (ms) for exact synchronization.
- Performance Focused: Minimal code footprint that won't slow down your tabs or drain your battery.
HOW IT WORKS
- Open a video in your Firefox browser.
- Click the LagSync icon in your toolbar.
- Adjust the slider or input a specific millisecond value until the sync is perfect.
PRIVACY FIRST
Firefox users value their data, and so do we.
- Zero Tracking: We do not collect, store, or transmit your browsing history or video data.
- Local Storage: All your settings and offsets stay locally in your browser.
- No Ads: LagSync is a utility tool, not an ad-delivery platform.
SUPPORT THE PROJECT
LagSync is a passion project. If it saved your movie night, consider supporting the development here:
Support LagSync
WHY LAGSYNC?
Most web players lack built-in tools for audio delay compensation. LagSync provides a straightforward, manual solution for users who want their media to match their audio perfectly—no matter what headphones they are using.
## Rankings
- #8,559 — Overall
- #29 — sync
- #50 — audio
- #67 — cause
- #78 — udio
- #210 — netflix
## Permissions and access
### Permissions
- `storage`
- `scripting`
- `activeTab`
### Host permissions
- `*://*.youtube.com/*`
- `*://*.youtube-nocookie.com/*`
- `*://*.youtu.be/*`
- `*://*.netflix.com/*`
- `*://*.twitch.tv/*`
- `*://*.vimeo.com/*`
- `*://*.disneyplus.com/*`
- `*://*.primevideo.com/*`
- `*://*.amazon.com/*`
- `*://*.hulu.com/*`
- `*://*.max.com/*`
- `*://*.hbomax.com/*`
- `*://*.peacocktv.com/*`
- `*://*.paramountplus.com/*`
- `*://*.tv.apple.com/*`
- `*://*.crunchyroll.com/*`
- `*://*.dailymotion.com/*`
- `*://*.plex.tv/*`
- `*://*.kick.com/*`
### Content script matches
- `*.youtube.com`
- `*.youtube-nocookie.com`
- `*.youtu.be`
- `*.netflix.com`
- `*.twitch.tv`
- `*.vimeo.com`
- `*.disneyplus.com`
- `*.primevideo.com`
- `*.amazon.com`
- `*.hulu.com`
- `*.max.com`
- `*.hbomax.com`
- `*.peacocktv.com`
- `*.paramountplus.com`
- `*.tv.apple.com`
- `*.crunchyroll.com`
- `*.dailymotion.com`
- `*.plex.tv`
- `*.kick.com`
## Safety
- **Risk impact:** Very high risk impact
- **Risk likelihood:** Moderate risk likelihood
### Analysis details
- Request access to the following domains: youtube.com, youtube-nocookie.com, youtu.be, netflix.com, twitch.tv, vimeo.com, disneyplus.com, primevideo.com, amazon.com, hulu.com, max.com, hbomax.com, peacocktv.com, paramountplus.com, apple.com, crunchyroll.com, dailymotion.com, plex.tv, kick.com
- This extension was recently updated in the past month. New updates may not be stable or safe.
> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).
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Source: [Chrome-Stats](https://chrome-stats.com/d/lagsync-bluetooth-audio-fix)