Mozilla Firefox 63.0 Beta3现已全新推出，此次火狐浏览器63.0 Beta3支持Windows10系统，优化主题界面风格、降低内存占用等问题，让你享受极速上网体验，欢迎下载体验！

Mozilla Firefox 63.0 Beta3介绍：

采用了实力强悍的新型引擎，更具性能优势。

页面载入更好、更快，占用内存更少。

出色的设计，灵动的功能，让上网体验更智能。

速度翻倍

想要超强大的浏览器引擎？这里有。想要等待页面载入的时间更短？这里也有。Firefox Quantum 现在达到以前的两倍快。

“快而极简，与 Firefox Quantum 相比 Chrome 显得过时。

更新日志：

最大的改进来自于对Windows 10的支持上，现在Firefox主题已经可以与Windows10实现明暗搭配，并且WebExtensions现在已经可以在Linux上运行。

New

On macOS, WebGL power preferences allow non-performance-critical applications and applets to request the low-power GPU instead of the high-power GPU in multi-GPU systems

Improved Windows 10 integration: your Firefox theme now matches your OS Dark / Light mode

WebExtensions now run in their own process on Linux

Faster tab switching in the majority of cases for our macOS users

Improved the reactivity of Firefox on macOS

Changed

In the Library, the Open in Sidebar feature for individual bookmarks was removed

Never check for updates option removed from about:preferences. If a substitute is needed, we recommend using the DisableAppUpdate enterprise policy

Firefox now warns about having multiple windows/tabs open when quitting from the main menu.

The Ctrl+Tab shortcut now displays thumbnail previews of your tabs and cycles through tabs in recently used order. This new default behavior is activated only in new profiles and can be changed in your preferences

The build infrastructure of Firefox on Windows moved to the Clang tool chain, bringing important performance gains

Developer

Changes affecting developers