Introducing Ad Blocker for Firefox on iOS
- ID
- 20483
- Status
- summarized
- Published
- 01 Sep 2026, 9:46 PM
- Fetched
- 03 Sep 2026, 5:13 PM
- Provider
- Hacker News
- Category
- dev-community
- Original URL
- https://blog.mozilla.org/en/firefox/ad-blocker-on-ios/
- Source URL
- https://hnrss.org/best
Summary
- Score
- 2.0
- Created
- 03 Sep 2026, 5:18 PM
- Tags
- Audience
- developers
What happened
Mozilla added a built-in Ad Blocker to Firefox on iOS, using Apple's WebKit Content Blocker technology and the EasyList filter list. It is off by default and toggleable via Settings > Browsing > Ad Blocker; it does not block first-party site-served ads, search result ads, or Firefox's own sponsored shortcuts.
Why it matters
This is a consumer browser feature announcement with minimal direct impact on builders; iOS web developers should just be aware that more Firefox iOS users may now block third-party ads and trackers by default if they opt in, which could affect third-party ad analytics on mobile Safari WebKit traffic.
Discussion angle
Brief mention only: note that Firefox chose to build this in-browser rather than via extensions because iOS extension support is limited — a constraint that also affects anyone building browser tooling for iOS.