ShieldBlock AI

AI-powered blocker for ads, trackers, malware and YouTube ads, with built-in SponsorBlock. On-device filtering, fast and private.

ShieldBlock AI blocks ads, trackers, and annoyances on your device. No accounts, no analytics, and nothing about your browsing is ever collected. WORKS THE MOMENT YOU INSTALL IT 133,000 filter rules are compiled into the extension ahead of time, so protection is active on the very first page you open. There is no list to download and no waiting. FIVE LAYERS OF BLOCKING • Network rules stop ad and tracker requests before they load • Cosmetic filtering removes the empty frames ads leave behind • Scriptlets defeat anti-adblock walls on supported sites • Heuristics catch native and in-feed ads that lists miss • An on-device ML classifier scores borderline sponsored content BUILT NOT TO BREAK SITES Filter lists ship thousands of exception rules that exist to keep payment flows, logins, and shared CDNs working. ShieldBlock AI compiles all of them, so blocking stays aggressive without taking the rest of the page down with it. YOUTUBE Skips video ads, mutes and burns through pre-rolls and mid-rolls, and includes SponsorBlock so in-video sponsor segments are skipped too. PRIVACY, PLAINLY • No accounts, no sign-in, no sync • No analytics, no telemetry, no tracking of any kind • Ad filtering, heuristics, and ML scoring all run on your device • Your browsing history and page content are never collected or transmitted • The one feature that contacts a server is SponsorBlock, and it is built so it cannot identify what you watch: it sends only a four-character hash prefix of the video ID, never the video itself. Switch it off in settings and the extension makes no outbound requests at all. CONTROLS FOR PEOPLE WHO WANT THEM • Allowlist any site with one click, per domain • Write your own ABP and cosmetic filter rules • Point-and-click element picker for anything left over • Export and import your full configuration • Live counters for every blocking layer Uses EasyList, EasyPrivacy, uBlock Origin filters, and AdGuard Base.