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Mozilla Automation Team2 min readrelease notesintermediate

Introducing Ad Blocker for Firefox on iOS: More Control, Fewer Distractions

Read on mozilla.orgHN 590·204 comments

Summary

Firefox for iOS now ships an optional built‑in ad blocker that leverages Apple’s WebKit Content Blocker API and the EasyList filter list. It blocks many third‑party ads and ad‑related trackers before they load, but leaves first‑party ads, search‑result ads, and Firefox‑provided sponsored content untouched. The feature is off by default and can be toggled in Settings → Browsing → Ad Blocker, and i…

  • Implemented as a native feature using WebKit’s Content Blocker API; no separate extension required on iOS.
  • Relies on the EasyList filter list to identify third‑party ads and trackers.
  • Scope is limited: does not block first‑party ads, search‑result ads, or Firefox’s own sponsored shortcuts.
  • Off by default; users enable it via Settings → Browsing → Ad Blocker.

iOS restricts browser extensions, so integrating ad‑blocking directly into Firefox provides users with a privacy tool comparable to desktop/Android without requiring a separate add‑on ecosystem.

4/10
iosfirefoxprivacyad blockingwebkit

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