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4h ago

Mozilla Adds Built-In Ad Blocker to Firefox for iOS

Using Apple's WebKit Content Blocker API with the EasyList filter, the feature stops many third-party ads and trackers before they load.

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Overview

  • Mozilla officially rolled out the built-in ad blocker for Firefox on iOS on Tuesday, September 1, 2026, after testing the feature for several weeks.
  • The blocker uses Apple's WebKit Content Blocker technology together with the widely used EasyList filter to prevent many third-party ad and tracker resources from loading.
  • Ad blocking is turned off by default and users can enable it in Settings > Browsing > Ad Blocker or toggle it per site from the site menu during a browsing session.
  • Mozilla deliberately excludes ads served directly by the visited site, ads shown in search results, and Firefox's own sponsored new‑tab shortcuts so site functionality and sponsored content are preserved.
  • The change narrows a feature gap with competing iOS browsers and should reduce page clutter and data use for users while leaving publisher-funded first‑party ads intact, a balance Mozilla says supports the open web.