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Mozilla Firefox beta

Beta or prerelease software is not intended for inexperienced users, as the software may contain bugs or may potentially damage your system. We strongly recommend that users exercise caution and save all mission-critical data before installing or using this software.

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Full Specifications

What's new in version 70.0b13

  • The baseline interpreter for JavaScript bytecode execution is now enabled
  • The developer tools accessibility panel now includes an audit for keyboard accessibility
  • The developer tools accessibility panel now includes a color deficiency simulator for systems with WebRender enabled
  • When focused on a toolbar button, users can now type the first (or first few) characters of another button's name to jump directly to that button.
  • Inactive CSS: The Inspector now grays out CSS declarations that donâ??t affect the selected element and shows a tooltip explaining why.
  • Built-in Firefox pages now follow the system dark mode preference
  • WebRender enabled by default for Windows desktops with Integrated Intel graphics for Low Resolution devices
  • Aliased theme properties have been removed, which may affect some themes
  • The Firefox Accounts toolbar menu has been updated and reorganized to give faster access to account features and services.


Publisher Mozilla
Publisher web site
Release Date October 08, 2019
Date Added October 08, 2019
Version 70.0b13


Category Browsers
Subcategory Web Browsers

Operating Systems

Operating Systems Windows 2000/XP/2003/Vista/7/8
Additional Requirements None

Download Information

File Size 47.38MB
File Name Firefox Setup 70.0b13.exe


Total Downloads 2,295,308
Downloads Last Week 41


License Model Free
Limitations Not available
Price Free
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