Tab Block

Prevent your browser from opening new tabs and stay focused.

Tab Block is a lightweight tab blocker Chrome extension that prevents unwanted new tabs from opening in your browser, helping you stay focused and productive. If you've ever wondered "how to block new tabs in Chrome?", this extension is the answer. Whether it's pop-ups, redirect links, or accidental keyboard shortcuts, Tab Block stops them all with a single toggle. It works as a reliable new-tab blocker by combining two layers of protection — network-level request blocking and instant tab removal — so nothing slips through. Block new tab creation instantly — no new windows or tabs can be opened while active Block website open new tabs — stops redirect-based tab spam before it loads Dual-layer protection using Chrome's built-in declarativeNetRequest API Configurable startup behavior — choose to always start on, always off, or remember your last state Safety net: the last remaining tab is never blocked, so your browser stays usable Zero data collection — everything runs locally in your browser Install this Chrome block new tab opening extension, click the icon, toggle it on, and enjoy a distraction-free browsing experience.