Google's Chrome Web Store has issued warnings that popular ad blockers like uBlock Origin may soon be blocked as the company transitions from the Manifest V2 extension specification to Manifest V3. A warning on uBlock Origin’s page indicates that the extension may no longer be supported for not complying with Chrome's updated best practices. This shift, aimed at improving user privacy and security, was outlined in a Google support bulletin that states extensions must meet new requirements to remain functional. Some users have reported messages advising them to switch to Manifest V3-supported alternatives, prompting many to consider moving to other browsers if uBlock Origin is removed. Google announced the deprecation of Manifest V2 in 2019, but users can continue using these extensions under the ExtensionManifestV2Availability policy until June 2025. This policy allows Manifest V2 extensions to function across platforms like Linux, Mac, Windows, and ChromeOS. Despite these challenges in Chrome, uBlock Origin continues to work well on other browsers, including Firefox. Additionally, Chromium-based browsers like Brave and Vivaldi are committed to supporting Manifest V2 extensions, offering users alternative solutions. The transition to Manifest V3 presents technical challenges for ad blocker developers, as it limits deeper browser control. A simplified version, uBlock Origin Lite, has been introduced but lacks advanced filtering features. The developer has provided FAQs to help users navigate the differences between Manifest V2 and V3, keeping them informed during this transition.
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