What feature of a web browser helps improve the user experience by blocking irrelevant pop-ups?

The pop-up blocker is a crucial feature of a web browser that enhances the user experience by preventing unwanted and often disruptive pop-up windows from appearing during web browsing sessions. These pop-ups can serve various purposes, including advertising, but they often interrupt the user, detracting from the overall browsing experience. By blocking these pop-ups, the pop-up blocker allows users to navigate websites more smoothly and with fewer distractions.

In addition to improving usability, pop-up blockers contribute to security by reducing exposure to potentially malicious websites that use pop-ups to deliver harmful content or engage in phishing attempts. This feature is integrated directly into most modern browsers and can usually be customized to allow pop-ups from certain sites if the user wishes, providing both flexibility and control over the browsing experience.