A powerful HTML text matching engine to dynamically alter web pages on the fly. Eliminate cyber-spam like pop-up windows, alerts, ad banners, animated GIFs, auto-play music, sounds, dynamic HTML, and more. Replace background images with your own, rewrite JavaScripts, even filter normally hidden HTTP header messages. Over 50 filters are included, and equally powerful custom filters can be created. Selectively replace most any HTML text or tags. Customize pages you visit often - the power is finally in your hands.