Duplicate Tab Killer

About

Keep your tab bar under control.

  Duplicate Tab Killer is a lightweight tab organizer with one job: stop tab clutter. It does that two ways that work together.

  FIND & CLOSE DUPLICATES
  • See a live count of duplicate tabs on the toolbar icon.
  • Close them all in one click — the oldest copy of each page is kept.
  • Optional auto-close: duplicates are removed the moment they appear.
  • Open a page you already have? You're taken to the existing tab instead of getting a second copy.

  ORGANIZE TABS INTO SESSIONS
  • Group the tabs you use together (work, research, a class) into named sessions backed by native Chrome tab groups.
  • Drag tabs into a session — or between sessions — right from the popup.
  • Start a session to bundle its tabs; End it to close them all at once.
  • Set an auto-close time so a session cleans itself up if you forget.
  • When you open a new tab, optionally choose which session it belongs to — or just keep browsing.

  STAY TIDY
  • Get an optional reminder about tabs you haven't touched in 3+ hours, with one click to keep or close them.
  • A "Recently closed" log shows what was closed and why.

  Everything runs locally. No accounts, no tracking, no data leaves your browser.