Highlights of Mozilla Firefox 20.0 includes per-window Private Browsing, brand-new download experience, fixed a Unity issue related to HiDPI mode, hanging plugins can now be easily closed, without crashing the web browser, improved page loads, shutdown, downloads, and other common tasks, improved implementation of Math.imul and ECMAScript 6 – clear(), new JavaScript Profiler utility, implemented getUserMedia for web access to the user’s microphone and camera, added blend mode support in , several <video> and <audio> improvements, details button on Crash Reporter.