Every tab accounted for.
A real tab manager lives in your new-tab sidebar — search every tab across every window, kill duplicates in one click, put idle tabs to sleep with a time threshold, and save whole browsing sessions to restore later.
Idle-tab sleep with a time dial.
Chrome can sleep tabs — but only on its own schedule. Sparkly gives you the dial. Pick a threshold (5m / 15m / 1h or All inactive), see exactly how many tabs will snooze, and run it on demand.
- Live count — badge updates as tabs age past the threshold.
- Pinned & audible tabs are safe — never sleeps a tab playing sound.
- Sleeping tabs are marked — moon badge on the favicon, faded title.
- Waking is instant — click a sleeping tab, Chrome reloads it.
tab.lastAccessed from Chrome 121+. Falls back gracefully on older Chrome.
Opened the same page 3 times? Close 2.
Sparkly hashes URLs across every window and flags duplicates with a bright border. One "Close all duplicates" button clears the noise — keeping the oldest tab so your scroll position survives.
- Smart matching — ignores query params that don't change content (utm, fbclid).
- Keeps the oldest — the one you actually remember opening.
- Visual banner — "3 duplicate tabs found" → bulk close.
Snapshot your whole setup, restore it later.
Named sessions save every open tab across every window in one click. Perfect for project switches, experiment branches, or just reclaiming a Friday evening's browsing state on Monday morning.
- Recently closed — the last N tabs you shut, one-tap restore.
- Saved sessions — name them, restore entire window groups.
- Stored locally — in your browser only, never synced to us.
What you get, by the numbers
Questions
Will sleeping a tab lose my scroll position or unsaved form data?
Chrome's discard API preserves scroll, form fields, and session cookies. The tab reloads from the same URL on wake but keeps DOM state that was in session storage. Unsaved form data in regular inputs may be lost — Chrome doesn't persist those across discards.
Does the "1h" threshold mean tabs older than 1 hour?
Yes — it filters to tabs not accessed in the last hour. The live count shows exactly how many match before you run it.
Can I auto-sleep tabs on a schedule?
Not in 4.4.14 — sleep is manual by design to prevent surprising you. If you want scheduled sleep, let us know.
Are sessions synced across my computers?
No. Sessions are stored in Chrome's local extension storage. To sync across devices you'd need Chrome Sync for extensions, which has quota limits. We intentionally stay local to avoid losing data.