Firefox 43.0


Mozilla Firefox is a fast, full-featured Web browser. It offers great security, privacy, and protection against viruses, spyware, malware, and it can also easily block pop-up windows. The key features that have made Mozilla Firefox so popular are the simple and effective UI, browser speed and strong security capabilities. Firefox is built on top of the powerful new Gecko platform, resulting in a safer, easier to use and more personal product.

Firefox includes pop-up blocking, tab-browsing, integrated Google search, simplified privacy controls, a streamlined browser window that shows you more of the page than any other browser and a number of additional features that work with you to help you get the most out of your time online.

Changes in Firefox 43.0:


  • Improved API support for m4v video playback
  • Users can opt-in to receive search suggestions from the Awesome Bar
  • On-screen keyboard displayed on selecting input field on devices running Windows 8 or greater
  • WebRTC streaming on multiple monitors
  • Improved Big5 support for Hong Kong supplementary characters on Windows XP
  • User selectable second block list for Private Browsing's Tracking Protection
  • GTK3 integration (GNU/Linux only)


  • 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
  • Unprefixed 'hyphens' property is now supported
  • WebIDE now has a sidebar-based UI
  • The 'transform-origin' property is now supported on SVG elements
  • Animation inspector now displays animations in a timeline


  • Eyedropper tool does not work as expected when page is zoomed

Download: Firefox 43.0 for Windows | Firefox 64-bit | ~45.0 MB (Freeware)
Download: Classic Theme Restorer (Customize Australis)
Download: Firefox 43.0 for Linux | 51.0 MB
Download: Firefox 43.0 for MacOS | 79.1 MB
View: Firefox Home Page

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