Firefox Release Notes

Performance enhancements:
- Faster load times for content on the Firefox Home page
- Faster page load times by loading either from the networked cache or the cache on the user’s hard drive (Race Cache With Network)
- Improved graphics rendering using Off-Main-Thread Painting (OMTP) for Mac users (OMTP for Windows was released in Firefox 58)

Drag-and-drop to rearrange Top Sites on the Firefox Home page, and customize new windows and tabs in other ways

Added features for Firefox Screenshots:
- Basic annotation lets the user draw on and highlight saved screenshots
- Recropping to change the viewable area of saved screenshots

Enhanced WebExtensions API including better support for decentralized protocols and the ability to dynamically register content scripts

Improved Real-Time Communications (RTC) capabilities.
- Implemented RTP Transceiver to give pages more fine grained control over calls
- Implemented features to support large scale conferences

Added support for W3C specs for pointer events and improved platform integration with added device support for mouse, pen, and touch screen pointer input

Added the Ecosia search engine as an option for German Firefox

Added the Qwant search engine as an option for French Firefox

Added settings in about:preferences to stop websites from asking to send notifications or access your device’s camera, microphone, and location, while still allowing trusted websites to use these features

Various security fixes

Firefox Private Browsing Mode will remove path information from referrers to prevent cross-site tracking

Changes affecting developers

Windows 7 users using accessibility services (like the Windows On-Screen Keyboard) may observe browser crashes after the update to Firefox 59. As a workaround, affected users can prevent external apps from triggering accessibility services in Firefox.

No sound in Firefox 58 and 59 on Linux in some configurations. See our support page for details and workarounds.