Seen It

A browser extension that allows you to hide YouTube videos you've already watched.

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Download

• Firefox
• Chrome

Features

• Toggle to show/hide previously watched videos
• Adjustable watch percentage threshold (Hide a video if you've watched at least x% of it)
• Works on YouTube home, search, subscriptions, and channel pages
  
  

Setup

bun install

bun run build

Loading the Extension

Chrome

1. Open chrome://extensions/
2. Enable "Developer mode" (toggle in top right)
3. Click "Load unpacked"
4. Select dist/chrome

Firefox

1. Open about:debugging
2. Go to "This Firefox"
3. Click "Load temporary addon"
4. Select the manifest.json file inside dist/firefox