Browser Secure

PIN-lock Chrome, Brave, and Edge on startup, after idle time, or on demand. Your tabs stay hidden until you unlock.

Chrome Web StoreDownload ZIPBrowser won't open?
Google ChromeBraveMicrosoft Edge
PIN lock4–8 digits, stored as a hash on your device only
Auto-lock on openPIN required every time you launch the browser
Idle lockLocks after minutes of inactivity (configurable)
ShortcutCtrl+Shift+L to lock instantly
Hidden tabsTabs are tucked away until you enter your PIN
No cloudNo accounts, analytics, or remote code

Install

  1. Install from the Chrome Web Store (works in Brave and Edge too), or load unpacked from GitHub.
  2. Open extension Options and set your PIN.
  3. Lock from the toolbar icon or Ctrl+Shift+L.

Store installs update automatically when a new version is published.

Need help?

If your browser opens and instantly closes after a shutdown while locked, use our recovery guide — free scripts for Chrome, Brave, and Edge.