uBlock Origin is a free and open-source browser extension designed to block ads and trackers on websites. It helps improve browsing speed and enhances user privacy by preventing unwanted content from loading. Available for popular browsers like Google Chrome, Mozilla Firefox, and Microsoft Edge, it allows users to customize their blocking preferences. The extension uses a variety of filter lists to identify and block advertisements, malware, and tracking scripts. Users can easily enable or disable specific filters and create their own rules for a more tailored browsing experience. Overall, uBlock Origin is a powerful tool for anyone looking to enjoy a cleaner and safer internet.