Firefox Last Major Browser to Support uBlock Origin

Firefox is now the last major browser to support uBlock Origin, a popular ad-blocking extension, after Microsoft Edge announced it will lock out such extensions with its move to Manifest V3 architecture. This move makes Firefox an attractive option for users who value ad-blocking and privacy.

Microsoft Edge's decision to move to Manifest V3 is not surprising, as it is based on Chromium, the open-source browser engine that powers most web browsers today. Google initiated the migration from Manifest V2 to V3 in Chrome/Chromium, and Microsoft Edge is following Google's lead. However, this move will limit the functionality of ad-blocking extensions like uBlock Origin.

Firefox, on the other hand, is not based on Chromium and has announced its continued support for uBlock Origin via a Bluesky post. This means that users who rely on uBlock Origin for ad-blocking and privacy can still use it with Firefox. Neither Safari nor DuckDuckGo, the two other major non-Chromium browsers, support uBlock Origin.

## What's at stake The move to Manifest V3 has significant implications for users who value ad-blocking and privacy. With Microsoft Edge and other Chromium-based browsers limiting the functionality of ad-blocking extensions, users may be forced to settle for less effective ad-blocking solutions. Firefox's continued support for uBlock Origin makes it a crucial option for users who want to maintain their online privacy.

## Firefox's ad-blocking features In addition to supporting uBlock Origin, Firefox's iOS app also comes with a new built-in ad blocker. The ad blocker is based on the EasyList filter and blocks many ads before they load. It stops various types of ads, including third-party advertising networks, ad-related trackers, and intrusive formats like pop-ups and overlays. While there are some exceptions to what the feature blocks, it provides an additional layer of ad-blocking protection for Firefox users.

## Why it matters The ability to block ads and protect online privacy is a critical concern for many users. With the majority of browsers moving to Manifest V3, Firefox's continued support for uBlock Origin and its built-in ad blocker make it a unique option in the market. As users become increasingly aware of the importance of online privacy, Firefox's commitment to ad-blocking and privacy may attract users who value these features.