Tab Resource Optimizer (Free)

About

Give your crowded browser a breather. Tab Resource Optimizer lets you put heavy tabs to sleep manually or automatically after they’ve been idle for a while, keeping Chrome fast without losing your place.

Why you’ll love it
One-click Sleep button on every open tab for instant cleanup
Auto-sleep timer you can set per your workflow (default 10 minutes)
Protect toggle for important sites so they always stay awake
No accounts, no tracking—the extension works entirely on your device
How it works
The popup lists the tabs in your current window with clear status badges. Sleep a tab to free memory and it’ll reload only when you return. Enable Auto-sleep to let the extension handle idle tabs in the background, while audio, pinned, or protected sites stay untouched.

Privacy first
All settings live in Chrome’s local storage. The extension never sends tab data, URLs, or usage info anywhere. You’re in control at every step.