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Firefox is no longer supported on Windows 8.1 and below.

Please download Firefox ESR (Extended Support Release) to use Firefox.

Firefox is no longer supported on macOS 10.14 and below.

Please download Firefox ESR (Extended Support Release) to use Firefox.

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Firefox System Requirements

Firefox Nightly 109.0a1

Windows

Operating Systems (32-bit and 64-bit)

  • Windows 7
  • Windows 8
  • Windows 10
  • Windows 11
  • Pentium 4 or newer processor that supports SSE2
  • 512MB of RAM / 2GB of RAM for the 64-bit version
  • 200MB of hard drive space

Mac

Operating Systems

  • macOS 10.12
  • macOS 10.13
  • macOS 10.14
  • macOS 10.15
  • macOS 11
  • macOS 12
  • Macintosh computer with an Intel x86 or Apple silicon processor
  • 512 MB of RAM
  • 200 MB hard drive space

GNU/Linux

Software Requirements

Please note that GNU/Linux distributors may provide packages for your distribution which have different requirements.

  • Firefox will not run at all without the following libraries or packages:
    • glibc 2.17 or higher
    • GTK+ 3.14 or higher
    • libstdc++ 4.8.1 or higher
    • X.Org 1.0 or higher (1.7 or higher is recommended)
  • For optimal functionality, we recommend the following libraries or packages:
    • DBus 1.0 or higher
    • GNOME 2.16 or higher
    • libxtst 1.2.3 or higher
    • NetworkManager 0.7 or higher
    • PulseAudio

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