Auto-close inactive tabs, keep Chrome fast, whitelist sites, restore tabs, and always one tab per domain. Tab Assassin.
Users
19
−2 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
3
0 in 30 days
Store rank
#156K
#130K among extensions
Version
1.2.2
updated 6 Nov 2025
Users
monthly, 12 months
Latest, 21 Oct 2026:19 usersMove the mouse over the chart for any month
Ratings count
monthly, 12 months
Latest, 21 Oct 2026:3 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About Tab Assassin (Auto-Cleanup)
Tab Assassin — Automatically declutter Chrome. Stay fast and focused.
Chrome gets slower when too many tabs are open. Tab Assassin keeps your browser light and organized by automatically closing tabs you no longer use. You decide how long tabs can stay open, and Tab Assassin takes care of the rest.
Smart features like Domain Sentinel (which keeps one live tab per site), custom whitelists, pause controls, and a searchable cleanup history make sure you never lose anything important. Your browser stays fast, your battery lasts longer, and your mind stays clear.
🧠 What It Does
• Automatically closes tabs you haven’t used for a while.
• Keeps one active tab per site with Domain Sentinel, so you never lose your place.
• Lets you whitelist important sites and ignore pinned tabs.
• Provides a cleanup history to restore any closed tab in one click.
• Shows you how many tabs were cleaned and how much memory was saved.
⚙️ Key Features and Benefits
• Automatic tab cleanup: Choose a timeout like 1 hour, 1 day, or 1 week. Tabs older than that close quietly in the background.
• Domain Sentinel: Cleans up tabs while keeping one open per website, so you stay on track.
• Smart whitelists: Protect sites or paths using flexible rules such as *://*.example.com/*
• Pinned tab protection: Keeps your favorite tabs always open.
• Pause anytime: Stop cleanup during work sessions, events, or streams.
• One-click restore history: Browse every closed tab and restore any of them instantly.
• Memory-aware cleanup: Finds and closes heavy tabs first to help Chrome run smoothly.
• Customizable and safe defaults: Works perfectly out of the box, but you can fine-tune it anytime.
• Premium options:
- Unlimited whitelists
- Custom timeouts
- Extended cleanup history visibility
🚀 Why Install It
• Instant performance boost. Fewer old tabs means faster Chrome and longer battery life.
• Less clutter, more focus. Stay organized without thinking about it.
• Safe by design. Smart rules prevent important tabs from being closed.
• Always recoverable. Every closed tab is saved in history and can be restored.
• Set it and forget it. Tab Assassin works quietly on your schedule.
🔒 Permissions Explained
• tabs – Finds inactive tabs (title, URL, last access time) and closes or restores them.
• storage – Saves your settings and cleanup history locally.
• alarms – Runs background checks at regular intervals.
• Optional host permissions – Used only to communicate securely with our backend (api.tabassassin.com) during sign-in or license checks.
🛡️ Privacy Assurances
• No content scripts. Tab Assassin does not inject code or read page contents.
• Local-first design. Your cleanup history and settings stay on your device.
• Minimal data use. Only tab metadata like URL, title, and timestamp is processed.
• No tracking, no ads, no selling data.
• Transparent communication. Only connects to our API when you sign in or verify your plan.
• You stay in control. Clear your history, pause cleanup, or whitelist any site at any time.
👤 Who It’s For
• Power users with dozens or hundreds of tabs.
• Developers, researchers, and students who switch between many sites.
• Anyone who wants Chrome to feel smooth and responsive all day.
⚡ Get Started
Install Tab Assassin, pick your timeout, and let it work in the background.
Your browser stays fast, your workspace stays clean, and your important tabs stay safe.