Introduction 🔗

By the end of this tutorial, popup windows should no longer appear.

Ad blockers like AdBlock can’t catch every popup window. This guide is a powerful weapon against newtab and newwindow events.

If you know that 99% of popups are scams, this method will come in handy.

Download 🔗

You can download the TamperMonkey extension from the official website: Open TamperMonkey.net

Simply choose your browser version and install it like any other extension, such as AdBlock.

Add Script 🔗

After installation, open TamperMonkey and click “Create a new script”.

Paste the following code — it overrides all window.open calls and blocks them:

(function() {
    'use strict';
    const script = document.createElement('script');
    script.textContent = `
        (function() {
            'use strict';
            const originalOpen = window.open;
            window.open = function(...args) {
                console.log('Blocked window.open call:', args);
                return null;
            };
            Window.prototype.open = function(...args) {
                console.log('Blocked Window.prototype.open call:', args);
                return null;
            };
        })();
    `;
    document.documentElement.appendChild(script);
    script.remove();
})();
        

This code replaces the window.open function so that it returns null, effectively blocking most scam popups.

Finish 🔗

After pasting and saving the script, enable it. It will run on all websites and block popup windows.

If a page stays cached, simply refresh it (Ctrl+F5).