# YouTube Comment Timeline Overlay

> Visualize comments directly on the video timeline. Spot highlights, discussions, and reactions instantly with timestamp markers.

Canonical page: [https://chrome-stats.com/d/youtube-comment-timeline](https://chrome-stats.com/d/youtube-comment-timeline)

## Overview

- **ID:** `youtube-comment-timeline`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Cheswick
- **Category:** photos-music-videos,alerts-updates
- **Daily users:** 2
- **Weekly downloads:** 1
- **Version:** 1.2
- **Last updated:** 2026-02-07
- **First published:** 2026-01-20
- **Size:** 44 KB
- **Data as of:** 2026-09-06
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/youtube-comment-timeline/)
- **Website:** [https://cheswick.dev/](https://cheswick.dev/)

## Description

<ul><li><strong>Timeline Markers:</strong> Gold markers on the progress bar indicate where comments refer to specific moments.</li><li><strong>Smart Clustering:</strong> High-density comment sections are grouped into clusters to maintain performance and readability.</li><li><strong>Rich Tooltips:</strong><ul><li>Displays full comment text.</li><li>Shows user avatars.</li><li><strong>Social Stats:</strong> See likes 👍 and reply counts 💬 at a glance.</li></ul></li><li><strong>Interactive Navigation:</strong><ul><li><strong>Click Marker:</strong> Seeks the video exactly to the timestamp of the comment.</li><li><strong>Click Tooltip:</strong> Scrolls down to the original comment in the discussion section.</li><li><strong>Cluster Support:</strong> Select specific comments from a list when multiple events happen close together.</li></ul></li><li><strong>Auto-Update:</strong> Automatically detects and adds markers for new comments as you scroll down the page.</li><li><strong>Native Design:</strong> Seamlessly integrates with the YouTube player (supports Dark Mode &amp; Fullscreen).</li></ul>

## Rankings

- #68,702 — Overall
- #96 — overlay
- #135 — comment

## Permissions and access

### Permissions

- `scripting`
- `activeTab`

### Host permissions

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

### Content script matches

- `*.youtube.com`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Request access to the following domains: youtube.com
- 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)
- [CommentSync - Real-time YouTube Comments](https://chrome-stats.com/d/commentsync) — 36 users, 3.00 / 5
- [YouTube Timestamps](https://chrome-stats.com/d/youtube-timestamps) — 548 users, 4.23 / 5
- [YouTube Comments Timestamps](https://chrome-stats.com/d/youtube-comments-timestamps) — 7 users, 1.00 / 5
- [YT Replay Chat](https://chrome-stats.com/d/yt-replay-chat) — 3 users
- [CommenTime](https://chrome-stats.com/d/commentime)
- [TubeStamper](https://chrome-stats.com/d/tubestamper) — 1 users
- [SideWatch](https://chrome-stats.com/d/sidewatch) — 6 users
- [Video Notes for YouTube](https://chrome-stats.com/d/video-notes-for-youtube) — 6 users
- [YouTube Comment Kit — Comment Search](https://chrome-stats.com/d/youtube-comment-kit) — 45 users, 4.80 / 5
- [Enhancer for YouTube™ – Structured Comments Layout](https://chrome-stats.com/d/youtube-assistent-new-layout) — 815 users, 2.47 / 5
- [Show YouTube comments while watching](https://chrome-stats.com/d/show-youtube-comments) — 158 users, 3.88 / 5

---

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