TimeMark — Video Timestamp Bookmarks

Tracking since Apr 1, 2026.

Changelog

• May 8, 2026
  description

  TimeMark is a Chrome extension that allows you to bookmark specific 
  timestamps in YouTube videos and return to them instantly.
  
  Instead of scrubbing through long videos to find the part you need, 
  TimeMark lets you save any moment with a custom label and jump back 
  to it with a single click.
  
  Key Features:
  - Save timestamps at any point in a YouTube video
  - Add custom labels to each bookmark for easy identification
  - Organise bookmarks into folders
  - Jump to any saved timestamp instantly
  - All data is stored locally on your device
  
  No account is required. No data is collected or transmitted. 
  All bookmarks and settings are stored privately on your device 
  using Chrome's built-in storage API.
  
  Ideal for students, researchers, and anyone who regularly works 
  with long-form video content.

  TimeMark — YouTube Timestamp Bookmarks
  Never lose your place in a YouTube video again. TimeMark lets you save any moment and jump back to it instantly — no scrubbing, no rewinding, no wasted time.
  
  🔖 SAVE TIMESTAMPS INSTANTLY
  
  Click the bookmark button directly inside the YouTube,
  Duplicate guard prevents saving the same moment twice
  
  ▶️ JUMP BACK IN ONE CLICK
  
  Click any saved bookmark to seek directly to that moment
  Playback resumes automatically
  Works on any YouTube video, any length
  
  🏷️ CUSTOM LABELS
  
  Name each bookmark so you know exactly what it contains
  No more "bookmark at 14:23" — label it "Key formula" or "Intro hook"
  
  📁 FOLDER ORGANISATION
  
  Group bookmarks by topic, subject, or project
  Keep lectures, tutorials, and research videos separate and clean
  
  🔒 FULLY PRIVATE — ZERO DATA COLLECTED
  
  No account required
  No sign-in, no sync, no servers
  Everything stored locally using Chrome's built-in storage API
  Nothing is transmitted anywhere — ever
  
  ⚡ LIGHTWEIGHT & NON-INTRUSIVE
  
  No impact on YouTube's performance
  Button appears only on video pages
  Popup opens only when you need it
  Works with YouTube's single-page navigation automatically
  
  
  WHO IS IT FOR
  → Students bookmarking lecture moments
  → Researchers referencing specific video sections
  → Developers following long coding tutorials
  → Anyone tired of scrubbing through long videos

Permissions & access

Permissions

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Host access

https://www.youtube.com/*

Screenshots