Mozilla has launched native ad blocking for Firefox on iOS, using Apple's WebKit Content Blocker technology to block third-party ads and trackers without requiring separate extensions.
The feature is now available to all iOS users and will block most third-party ads and trackers before they load on iPhones. The implementation leverages Apple's WebKit Content Blocker framework alongside the EasyList filter, a widely-used open-source ad filter list.
Users can enable ad blocking directly within Firefox settings without downloading additional extensions. The built-in approach reduces bandwidth consumption and removes clutter from mobile websites.
Mozilla tested the feature over several weeks before today's full rollout. The decision to use Apple's native content blocking technology reflects the constraints of iOS development, where third-party browsers must use WebKit rather than their own rendering engines.
EasyList, maintained by the open-source community, filters known advertising domains and tracking scripts. This filter list has been the standard for ad blocking across multiple browsers for over a decade.
The launch aligns with Mozilla's broader privacy-focused positioning for Firefox. On desktop, Firefox already offers enhanced tracking protection by default. The iOS feature extends this capability to mobile users who typically face heavier ad loads and tracking on smaller screens.
For users seeking granular control, Firefox's settings will allow toggling ad blocking on and off per site if needed. The feature applies to standard web browsing within the browser but does not extend to in-app advertising outside Firefox.
Mozilla's move follows similar developments across the browser landscape, where ad blocking has become a standard offering on both desktop and mobile platforms.
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