Does Mozilla Firefox have a built-in pop-up blocker?

Yes, Mozilla Firefox has a built-in pop-up blocker. This feature is designed to block unwanted and intrusive pop-up windows that can disrupt your browsing experience. By default, Firefox blocks most pop-ups while allowing some requested ones, such as those opened by clicking on a link. However, if you want to customize the pop-up blocking settings, you can do so by going to the Firefox menu, selecting "Preferences" (or "Options" on Windows), and then navigating to the "Privacy & Security" tab. Here, you will find options to block or allow pop-ups from specific websites and configure exceptions. Overall, Firefox's built-in pop-up blocker helps to enhance your internet privacy and reduce distractions while browsing.