Duplicate Tab Detector

Detects duplicate tabs, notifies you, and lets you close them in one click.

Too many tabs? Duplicate Tab Detector notices when you open a page that's already open and helps you clean up in one click. FEATURES • Instant alerts – get a notification the moment you open a duplicate, with a button to close it and jump back to the tab you already had. • Badge counter – the toolbar icon shows how many extra duplicate tabs are open. • One-click cleanup – the popup groups duplicates together. Close the extras per group, or all at once. • Smart keeping – it keeps your pinned, active, or most recently used tab and never closes pinned tabs. • Auto-close mode – optionally close new duplicates automatically and switch to the existing tab. • You decide what "duplicate" means – optionally ignore #anchors, ?query strings, trailing slashes, and www. PRIVACY Everything happens locally in your browser. The extension doesn't collect, store, or send any browsing data. Your settings are saved with Chrome's own sync storage. Works across all your open windows.