Firefox Release Notes

More privacy protections from Enhanced Tracking Protection:

• Social tracking protection, which blocks cross-site tracking cookies from sites like Facebook, Twitter, and LinkedIn, is now a standard feature of Enhanced Tracking Protection.
• The Privacy Protections report shows an overview, with details, of the trackers Firefox has blocked. It provides consolidated reports from Monitor and Lockwise.

More security protections from Firefox Lockwise, our digital identity and password management tool:

• Lockwise for desktop lets you create, update, and delete your logins and passwords to sync across all your devices, including the Lockwise mobile apps and Firefox mobile browsers
.
• Integrated breach alerts from Firefox Monitor, to alert you when saved logins and passwords are compromised in online data breaches.
• Complex password generation, to help you create and save strong passwords for new online accounts.

Improvements to core engine components, for better browsing on more sites

• A faster Javascript Baseline Interpreter to handle the modern web’s
  large codebases and improve page load performance by as much as 8
  percent.
• WebRender rolled out to more Firefox for Windows users, now available by default on Windows desktops with integrated Intel graphics cards and resolution of 1920x1200 or less, for improved graphics rendering.
• Compositor improvements in Firefox for macOS that reduce power
  consumption, speed up page load by as much as 22 percent, and reduce
  resource use for video by up to 37 percent.

More browser features to help you get the most out of Firefox products and services

• A stand-alone Firefox account menu for easy access to Firefox services like Monitor and Send.
• A message panel accessed from the gift icon in the toolbar that offers a quick overview of new releases and key features.
• When a website uses your geolocation, an indicator is shown in the
  address bar.

Various security fixes

Built-in Firefox pages now follow the system dark mode preference

Aliased theme properties have been removed, which may affect some themes

Passwords can now be imported from Chrome on macOS in addition to existing support for Windows

Readability is now greatly improved on under- or overlined texts, including links. The lines will now be interrupted instead of crossing over a glyph.

Improved privacy and security indicators

• A new crossed-out lock icon will indicate sites delivered via
  insecure HTTP
• The formerly green lock icon is now grey
• The Extended Validation (EV) indicator has been moved to the identity
  popup that appears when clicking the lock icon

Developer Information
For additional developer resources from Mozilla, visit our Mozilla Developer YouTube channel for new videos every week.

The Developer Tools Accessibility panel now includes an audit for keyboard accessibility and a color deficiency simulator for systems with WebRender enabled

Inactive CSS: The Inspector now grays out CSS declarations that don’t affect the selected element and shows a tooltip explaining why -- and even how to fix it.

The new DOM Mutation Breakpoints in Developer Tools allows developers to diagnose when scripts add, remove or update page content. This makes debugging of complex script interactions and dependencies a lot easier.

WebExtensions developers can now inspect browser.storage.local data using the "Addon Debugging" Firefox Developer Tools.

With new network resource search in Developer Tools, you can quickly find resources based on their request and response data, including headers, cookies and content.

Some websites or page elements using dynamic JavaScript fail to load. This can be fixed with a temporary workaround.

Keyboard navigation does not work correctly under macOS 10.15