What’s New

• New

  Support for Windows 10

• New

  Added protection against unwanted software downloads

• New

  User can receive suggested tiles in the new tab page based on categories Firefox matches to browsing history (en-US only).

• New

  Hello allows adding a link to conversations to provide context on what the conversation will be about

• New

  New style for add-on manager based on the in-content preferences style

• New

  Improved scrolling, graphics, and video playback performance with off main thread compositing (GNU/Linux only)

• New

  Graphic blocklist mechanism improved: Firefox version ranges can be specified, limiting the number of devices blocked

• Changed

  Add-on extensions that are not signed by Mozilla will display a warning

• Changed

  NPAPI Plug-in performance improved via asynchronous initialization

• Changed

  Smoother animation and scrolling with hardware vsync (Windows only)

• Changed

  JPEG images use less memory when scaled and can be painted faster

• Changed

  Sub-resources can no longer request HTTP authentication, thus protecting users from inadvertently disclosing login data

• HTML5

  IndexedDB transactions are now non-durable by default

• HTML5

  Implemented AudioBufferSourceNode.detune to modulate playback rate in cents, a logarithmic unit of measure used for musical intervals

• Developer

  Improved Performance tools in the developer tools: Waterfall view, Call Tree view and a Flame Chart view

• Developer

  New rules view tooltip in the Inspector to tweak CSS Filter values

• Developer

  Console API messages from SharedWorker and ServiceWorker are now displayed in web console

• Developer

  New page ruler highlighting tool that displays lightweight horizontal and vertical rules on a page

• Developer

  Inspector now searches across all content frames in a page

• Fixed

  Kannada text does not display properly in built-in pdf viewer

• Fixed

  Various security fixes