# Firefox: Mozilla confirms support for classic extensions and Manifest V3 add- ons 原文：https://www.ghacks.net/2025/02/26/firefox-mozilla-confirms-support-for-classic -extensions-and-manifest-v3-add-ons/ 缩网址：https://is.gd/eOv8Wh While Google is ending support for classic extensions for more users of its Chrome web browser, several browser makers have pledged continued support for Manifest V2 extensions. 尽管 Google 正逐步终止 Chrome 浏览器对使用者提供的传统扩充功能(extension)，多家 浏览器开发商仍承诺会继续支援 Manifest V2 扩充功能。 Mozilla confirmed in 2023 that the organization's Firefox web browser would support classic extensions and new extensions at the same time. It was not the only browser maker to pledge support. Brave Software and Opera Software also came forth and said that they would support at least some classic extensions. Mozilla 于 2023 年表态 Firefox 浏览器将同时支援传统（V2）及新型扩充功能（V3）。 不只 Mozilla， Brave Software 和 Opera Software 等浏览器开发商也表示将至少支 援部分传统扩充功能。 Mozilla reaffirmed its stance on future extensions support in Firefox this week on the organization's official blog. 本周 Mozilla 在其官方部落格上再次表明了其对 Firefox 未来扩充功能支援的立场。 https://blog.mozilla.org/en/products/firefox/firefox-manifest-v3-adblockers/ In short: Firefox will support Manifest V2 and V3 extensions at the same time going forward. Mozilla says that the decision will give developers more flexibility and "creative possibilities". 简单的说，Firefox 未来将继续同时支援 Manifest V2 和 V3 两种规范。 Mozilla 表示 ，这项决策将赋予开发者更大的弹性与创意发展。 This also ensures that Manifest V3 extensions are compatible with the open source browser and that users can continue using their classic extensions. In other words, it is giving users access to the best of both worlds and developers the freedom to stick to Manifest V2 for their extensions or to use the newer Manifest V3 ruleset for extensions instead. 这项决策也确保了 Manifest V3 扩充功能与 Firefox 这个开源浏览器的相容性，同时使 用者也能继续使用他们原有的传统扩充功能。 换句话说，这让使用者可以兼得两者的优 点；开发者也能自由选择继续沿用 Manifest V2 规范开发扩充，或是改用较新的 Manifest V3 规范来开发。 ## Manifest V3 的争议 Google claimed from the very beginning that Manifest V3 was designed to improve security and performance of extensions and the browser as a consequence of that. First drafts introduced major changes that affected content blockers significantly. Google 最初声称 Manifest V3 的设计宗旨是提升扩充功能及浏览器的安全性与效能。然 而，最初版本草案中引入的重大变更，却对内容阻挡工具造成了显著影响。 Google conceded and got back to the drawing board multiple times to tone down the changes. The rollout of Manifest V3 was delayed numerous times, and the changes did play a role in that. Google 多次妥协并重回设计阶段，以减轻这些变更的影响。 Manifest V3 的发布因此多 次延期，而这些变更正是延迟的原因之一。 The current status is the following: Google has modified Manifest V3 to improve content blocker functionality. This happened after a large outcry from developers, publications, and users. 现在的情况是：Google 已经多次调整了 Manifest V3 的内容，以提升内容阻挡工具的功 能。而这一切，是源于开发者、媒体以及使用者的大力反弹。 While Google has improved the situation, Manifest V3 is not as capable from the perspective of content blockers as Manifest V3. Raymond Hill, creator of the popular content blocker uBlock Origin, developed a weaker version of the extension for Chrome and other Chromium-based browsers in the process. 虽然 Google 已经改善了 V3。但对内容阻挡工具来说，Manifest V3 的功能仍然不如 Manifest V2。热门内容阻挡工具 uBlock Origin 开发者 Raymond Hill，也因此为 Chrome 和其他 Chromium 核心浏览器开发了一个功能比较烂的版本。 Even before that, he stated that the Firefox version of the extension offered the best content blocking capabilities. With Manifest V3, this advantage has shifted even more towards Mozilla's web browser. 早在 Manifest V3 改变之前，uBlock Origin 的作者 Raymond Hill 就曾表示，Firefox 版本的功能在内容阻挡方面表现最佳。而 Manifest V3 的推出，更进一步扩大了 Firefox 浏览器在这方面的优势。