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Animation inspector now displays animations in a timeline. Markup view shows indicators for pseudo-classes locked for elements. Bind F1 key to open the settings when the toolbox is focused. New ‘Use in Console’ context menu item in Inspector to store selected element in a temporary variable. Search button next to overridden CSS properties to find similar properties in the rules view. Ability to filter styles from their property names in the rules view.
Stack traces are now shown for exceptions inside the console. Added ability to display server-side logs in the console. Ability to choose resolution for the GCLI screenshot command. Subresource integrity allows developers to make their sites more secure. Network requests in Console now link to Network panel instead of opening in a popup. Improved Big5 support for Hong Kong supplementary characters on Windows XP. On-screen keyboard displayed on selecting input field on devices running Windows 8 or greater. Users can choose search suggestions from the Awesome Bar. Improved API support for m4v video playback.
Private Browsing with Tracking Protection offers choice of blocking additional trackers. Here’s the list of new features and fixes released with Firefox 43.0: New
Firefox 43.0, the latest stable version features an improved API support for m4v video playback, WebRTC streaming on multiple monitors, GTK3 integration (GNU/Linux only) and others. Install Firefox 43 on Ubuntu 15.10, Ubuntu 14.04 and Derivatives. Firefox 43 Stable for Linux Ubuntu Systems.