Tab Declutterer – Close Dupes & Suspend Idle

Find duplicates, suspend idle tabs, group by domain. Save memory in one click.

Tidy up 30+ tabs in one click. Tab Declutterer finds duplicates, suspends idle tabs to free memory, and groups what's left by domain — everything runs locally in your browser. WHAT IT DOES • Close duplicates — same-URL tabs detected even with utm params and hash fragments. Keeps the newest, never kills the active tab. • Suspend idle tabs — uses chrome.tabs.discard, so the tab stays in place but its memory is freed. Threshold 5–60 min. • Group by domain — one click collapses tabs into tidy named, collapsed tab groups. • Search, filter, sort — filter by All / Duplicates / Idle / Suspended, press / to search, sort by idle, domain, or recent. SAFE BY DEFAULT • Protects pinned tabs and tabs playing audio • Domain whitelist (e.g. gmail.com, notion.so are never auto-suspended) • Auto-sweep every 5 minutes, configurable or off • Lifetime counters: tabs suspended + duplicates closed PRIVATE No backend, no analytics, no tracking. Settings and counters stay in chrome.storage.local on your device. PERMISSIONS USED tabs + tabGroups (find/group tabs), storage (settings on-device), alarms (5-min auto-suspend sweep).