Mozilla introduced an ad-blocking feature in the iOS version of Firefox on September 1, 2026. The built-in option, which followed several weeks of testing, blocks most third-party ads and trackers before they load, reducing bandwidth usage and simplifying mobile websites. The feature uses Apple’s WebKit Content Blocker technology and the EasyList filter, so no separate extension needs to be installed. Ad blocking can be enabled under “browsing > ad blocker” in Firefox settings and toggled on or off during a session from the site menu. Disabled by default, the feature does not block ads served directly by websites or ads in search results. Sponsored shortcuts and content in the new tab are also excluded. The feature, Firefox’s first ad-blocking support on iOS, is also available in Brave, Vivaldi and Opera.
Why it matters
The option aims to simplify the mobile Firefox experience by allowing iOS users to reduce ad and tracker loads without having to search for a separate tool. Its use of Apple’s WebKit Content Blocker infrastructure and EasyList filters shows that the feature is based on the browser’s existing technical framework. However, because it is disabled by default, users must enable the setting themselves; in addition, ads served directly by websites, ads in search results and sponsored content in the new tab are not blocked. These limitations show that the feature is not a solution covering all forms of advertising, while Firefox’s joining Brave, Vivaldi and Opera in this category on iOS creates a new point of comparison in terms of competition.
Background
Firefox is not a new name in the FikirPilot archive: in the past 90 days, we published one article mentioning it; that article is dated August 25, 2026.