FRITZ!Box Adblock Manager

Control your FRITZ!Box ad blocker: pause the DNS filter, unblock broken sites, manage exceptions.

Since FRITZ!OS 8.40/8.50 the FRITZ!Box has a built-in ad blocker: the DNS filter. It blocks ads and trackers for every device on your home network – similar to Pi-hole or AdGuard Home, but without extra hardware. The catch: when a site breaks because of the filter, you have to log into the FRITZ!Box web interface, find the right menu and figure out which address to allow. This extension does it in one click. FEATURES • Pause the ad blocker – for 5 minutes, 15 minutes or 1 hour. The filter turns itself back on afterwards. • Site not working? The extension shows which addresses were blocked on the current page – and unblocks them with one click. • All exceptions and custom blocks at a glance, each with a “remove” button. • Status icon: green = filter active, orange = paused. Plus the number of blocked requests. • English and German, following your browser language. REQUIREMENTS • FRITZ!Box with DNS filter (FRITZ!OS 8.40 Labor or 8.50 and newer) • At least one filter list set up in the FRITZ!Box (e.g. HaGeZi) • A FRITZ!Box user with the “FRITZ!Box settings” permission – a separate user just for the extension is a good idea (it still needs the settings permission) PRIVACY Your credentials stay in your browser and are sent only to your own FRITZ!Box. No developer servers, no tracking, no analytics. Open source (MIT license). NOTE This is not a product of FRITZ! GmbH (formerly AVM). FRITZ!Box is a trademark of FRITZ! GmbH. The extension uses the (not yet officially documented) API of the FRITZ!Box web interface; a FRITZ!OS update may require an adjustment. Changelog: 1.0.2 – 2026-11-12 - Separate store packages for Chrome/Edge and Firefox, each containing only the manifest entries for that browser. This removes the `background.scripts` warning in Chrome. - After a FRITZ!OS update the extension showed "FRITZ!Box reports 400: permission denied" instead of logging in again. Newer FRITZ!OS versions answer an expired session with HTTP 400 and code 3001 instead of 401/403; the extension now logs in again in this case. - The extension now checks at login whether the user has the "FRITZ!Box settings" permission and reports a missing permission right away. - If the FRITZ!Box rejects the DNS filter API although the user has the permission, the extension also tries `/api/v0/dnsfilter` (without `beta`), in case a later FRITZ!OS version moves the API there. The working path is remembered. If none works, the extension says that the API is missing or was changed by a FRITZ!OS update. V1.0.1: - The FRITZ!Box could not be reached ("FRITZ!Box not reachable"). Connections via http:// work again. - Blocked addresses of a page were often missing from the list when several requests failed at the same time. V1.0.1 - initial release