An Ad Blocker is a tool or extension that prevents ads from displaying on websites. By blocking ad scripts, these tools help users avoid intrusive ads and speed up browsing. Ad blockers are particularly popular with users who experience ad fatigue or dislike disruptive ads.

For marketers, ad blockers highlight the need for user-friendly, relevant ads. Many are adopting less intrusive ad formats or turning to native advertising to reach ad-blocking users. Focusing on high-quality, contextual ad placements helps brands create ads that users are more likely to welcome.