Mozilla Firefox 53 今天正式发布，据之前Mozilla公布的消息显示，从这一版本开始，将默认启用多进程架构，如果浏览器安装了不支持多进程的扩展，那么浏览器将仍然使用单一进程；更重要的是，从53版开始，Firefox停止对Windows XP与Vista的支持，这意味着如果想使用更高版本的Firefox就要升级到Windows 7及以上的版本， 新特性： Improved graphics stability for Windows users with the addition of compositor process separation (Quantum Compositor) Two new 'compact' themes available in Firefox, dark and light, based on the Firefox Developer Edition theme Lightweight themes are now applied in private browsing windows Reader Mode now displays estimated reading time for the page Windows 7+ users on 64-bit OS can select 32-bit or 64-bit versions in the stub installer
改进： Permission notifications have a cleaner design and cannot be easily missed Windows XP and Vista are no longer supported. XP and Vista users running Firefox 52 will continue to receive security updates on Firefox ESR 52. 32-bit Mac OS X is no longer supported. Firefox is now a 64-bit only Mac OS X application Updates for Mac OS X are smaller in size compared to updates for Firefox 52 Media playback on new tabs is blocked until the tab is visible The last few characters of shortened tab titles fade out instead of being replaced by ellipses to keep more of the title visible New visual design for audio and video controls Ended Firefox Linux support for processors older than Pentium 4 and AMD Opteron Media playback on new tabs is blocked until the tab is visible
开发者： Changes for web developers Support for WebM video with alpha, which allows playing videos with transparent backgrounds
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