# CommentSync - Real-time YouTube Comments

> Sync YouTube comments with video playback. See reactions and timestamps appear automatically as you watch.

Canonical page: [https://chrome-stats.com/d/commentsync](https://chrome-stats.com/d/commentsync)

## Overview

- **ID:** `commentsync`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** motade
- **Category:** games-entertainment
- **Daily users:** 36
- **Weekly downloads:** 1
- **Rating:** 3.00 / 5 (2 ratings)
- **Version:** 1.0.3
- **Last updated:** 2026-01-26
- **First published:** 2026-01-20
- **Size:** 24 KB
- **Data as of:** 2026-09-13
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/commentsync/)

## Description

Bring your YouTube comments to life!

Have you ever found yourself scrolling down while watching a video just to understand what a timestamped comment was referring to? With CommentSync, you no longer have to choose between the video and the community.

CommentSync automatically detects comments with timestamps and displays them as elegant, non-intrusive overlays at the exact moment they are mentioned. Experience the energy of a live premiere or a Twitch chat on any YouTube video!

Key Features:
🚀 Lightning Fast Experience: No more waiting for comments to load. Enjoy instant access to community reactions the moment you start watching.

✨ Elegant Design: Experience a modern, distraction-free interface. Our sleek overlays blend perfectly with the YouTube player for a premium, native feel.

🧠 Curated Highlights: Don't get overwhelmed during popular moments. The extension automatically highlights the most relevant and high-quality reactions, keeping your screen clean.

🛡️ Distraction-Free Viewing: Your viewing experience is sacred. The overlay automatically tucks itself away during advertisements and when you're interacting with player controls.

How it works:
Install the extension.

Open any YouTube video.

Watch as community insights, jokes, and reactions "pop up" on your screen at the perfect time.

Stop scrolling and start watching. Upgrade your YouTube experience with CommentSync today!

## Rankings

- #19,072 — Overall
- #35 — comment
- #64 — etsy
- #94 — sync

## Permissions and access

### Permissions

- `storage`
- `declarativeNetRequestWithHostAccess`
- `tabs`

### Host permissions

- `https://*.youtube.com/`

### Content script matches

- `*.youtube.com`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension has low user count. Unpopular extensions 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).

## Similar extensions and apps

- [YouTube Commentary](https://chrome-stats.com/d/youtube-commentary)
- [YT Replay Chat](https://chrome-stats.com/d/yt-replay-chat) — 3 users
- [CommenTime](https://chrome-stats.com/d/commentime)
- [YouTube Comment Timeline Overlay](https://chrome-stats.com/d/youtube-comment-timeline) — 2 users
- [Youtube comments sidebar](https://chrome-stats.com/d/youtube-comments-sidebar) — 1 users
- [SideWatch](https://chrome-stats.com/d/sidewatch) — 6 users
- [Youtube Comments](https://chrome-stats.com/d/youtube-comments) — 11 users, 1.00 / 5
- [YouTube side comments](https://chrome-stats.com/d/youtube-side-comments) — 5 users
- [YouTube Timestamps](https://chrome-stats.com/d/youtube-timestamps) — 555 users, 4.23 / 5
- [Enhancer for YouTube™ – Structured Comments Layout](https://chrome-stats.com/d/youtube-assistent-new-layout) — 815 users, 2.47 / 5
- [YouTube Comment Kit — Comment Search](https://chrome-stats.com/d/youtube-comment-kit) — 49 users, 4.80 / 5
- [Show YouTube comments while watching](https://chrome-stats.com/d/show-youtube-comments-) — 22 users

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Source: [Chrome-Stats](https://chrome-stats.com/d/commentsync)