Optimizes memory by suspending inactive tabs using LRU cache and WASM.
Users
29
−4 in 30 days
Rating
4.9 / 5
unchanged in 30 days
Ratings
10
0 in 30 days
Store rank
#132K
#110K among extensions
Version
1.0
updated 15 May 2025
Users
monthly, 17 months
Latest, 20 Oct 2026:29 usersMove the mouse over the chart for any month
Ratings count
monthly, 17 months
Latest, 20 Oct 2026:10 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 NapTab
💤 NapTab — Automatically Put Inactive Tabs to Sleep
Too many tabs? Chrome getting sluggish?
NapTab automatically suspends tabs you haven’t used in a while, so your browser stays fast and your memory stays free.
No need to close anything — just keep browsing. We’ll handle the rest.
🔧 How It Works
NapTab uses a custom-built memory manager powered by C++ and WebAssembly for super fast tab tracking. It quietly suspends the least recently used tabs when you go over your set limit (default is 10).
Tabs you care about (like music players or docs) can be whitelisted so they never go to sleep.
✨ Key Features
🌙 Smart Auto-Sleep — suspends inactive tabs to save memory
🛡️ Whitelist Support — protect important tabs from suspension
📊 Live Dashboard — see which tabs are active, sleeping, or whitelisted
⚡ Fast Under the Hood — LRU cache in WebAssembly = blazing performance
🔒 Privacy First — no tracking, no external data, no nonsense
💡 Perfect For:
Developers juggling dozens of tabs
Students deep into research
Anyone tired of a laggy browser
👇 Get Started
Click the NapTab icon
Set your max active tab limit
Add important URLs to your whitelist
Enjoy a faster, cleaner Chrome experience
Lightweight. Fast. Private.
If you’ve ever thought “I should close some tabs…” — NapTab is for you.