Firefox for iOS Adds Native Ad Blocking That Users Must Enable Manually

Mozilla is adding native ad blocking to Firefox for iOS. Once the feature reaches your account, you can use it to block many ads while browsing on mobile.

The ad blocker is off by default and targets third-party ad networks, most third-party ads on websites, ad-related trackers, pop-ups, and overlays at the network level.

It does not block ads in search results or sponsored content on Firefox's own pages. The feature is still experimental and not available to everyone yet. Ads not covered by the EasyList filter may still appear.

What Firefox for iOS Ad Blocking Covers and Leaves Out

According to Mozilla's support page, Firefox for iOS blocks third-party ad networks and exchanges along with many third-party ads served on websites at the network level, as well as ad-related trackers, pop-ups, and overlays.

Some ads will still show up. You will see ads in search results from Google, Bing, and DuckDuckGo, as well as sponsored content on the Firefox Home and New Tab pages. Ads not included in the EasyList filter may also get through. The ad blocker only works inside the Firefox iOS app.

Firefox is not the only browser with native ad blocking on iOS. DuckDuckGo and Brave also include built-in ad blockers and let users turn off their own search ads. To block ads in other apps, you can use URL filters in iOS 26 along with a third-party app like Wipr 2.

Ad blocking is off by default. You need to turn it on manually:

1. Open the Firefox iOS app and tap the three dots.
2. Go to Settings, then Browsing.
3. Under the Content header, toggle on Ad Blocker.

You can also access the ad blocker from the Site menu by tapping Ad Blocker under the site name and URL. This opens the Browsing menu directly. The Site menu also shows if ad blocking is currently on or off.

Availability

Mozilla says the feature is experimental and not yet available to all users, so you may not see the option in your browser settings. There is no timeline for when the rollout will reach everyone. Once it is available, you can enable it in the Browsing settings as described above.

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