Firefox 40.0 released, now available for download

Firefox

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.

Firefox 40.0 changes:

What’s New

Support for Windows 10
Added protection against unwanted software downloads
Suggested Tiles show sites of interest, based on categories from your recent browsing history
Hello allows adding a link to conversations to provide context on what the conversation will be about
New style for add-on manager based on the in-content preferences style
Improved scrolling, graphics, and video playback performance with off main thread compositing (GNU/Linux only)
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
Smoother animation and scrolling with hardware vsync (Windows only)
JPEG images use less memory when scaled and can be painted faster
Sub-resources can no longer request HTTP authentication, thus protecting users from inadvertently disclosing login data
NPAPI Plug-in performance improved via asynchronous initialization

HTML5

IndexedDB transactions are now non-durable by default
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
Console API messages from SharedWorker and ServiceWorker are now displayed in web console
Inspector now searches across all content frames in a page
New rules view tooltip in the Inspector to tweak CSS Filter values
New page ruler highlighting tool that displays lightweight horizontal and vertical rules on a page

Fixed