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Thanks to the protest from subs such as our own, reddit will not be removing CSS from reddit!

Do you enjoy Firefox and the open web?

Get involved and stay informed.

Have you seen a misuse of Mozilla brands?



  • Before posting:

  • 1) Run through basic troubleshooting

  • 2) Search for your issue on Google, and use the search bar on /r/Firefox

  • Guidelines:

  • 1) Use the "flair" link under your submission to mark it as "Help", then as "Solved" when a solution is found.

  • 2) Provide basic technical information such as your operating system, which version of Firefox you are on, and which addons you have installed. This information can be found here.

  • 3) Use a descriptive title - someone browsing may know the answer but would have never opened your post

  • 4) Do not be hostile - you will find that oftentimes people will be less likely to help someone who is openly hostile over a minor change, or threatens to switch browsers. You are asking for help, try to act like it.

  • After Posting:

  • No luck? Try Mozilla's official help site, (SUMO)

  • Solved? Remember to flair your post as solved to help others with the same problem.

  • Found a bug? Master the art of filing bugs on Bugzilla.

Release downloads

  • You can see the release calendar here:
    MozillaWiki: RapidRelease/Calendar

  • Main releases

  • Firefox

  • Mobile phone & tablets

  • These are the main releases for Windows, macOS, Linux, Android, FxOS, and iOS. Best for most users.
  • Want 64-bit? Get it here!

  • Pre-release releases

  • Beta

  • Developer Edition

  • Nightly

  • Pre-release builds intended for testing new features, in order of most-stable to least, and most frequently update to least.

  • Developer Edition comes tuned for web developer's needs and with a custom theme.

  • Nightly updates every night.

  • Other releases

  • Extended Support Release

  • Unbranded builds

  • Extended Support Release or ESR is intended for organizations, and is a build rarely given new features, but regularly updated for security.

  • Unbranded builds are meant for extension and addon developers.

Related subreddits

  • Mozilla-related:

  • /r/Mozilla

  • /r/FireFoxOS
  • /r/FirefoxStudents
  • /r/Thunderbird

  • Customization:

  • /r/FireFoxAddons
  • /r/Bookmarklets
  • /r/UnixPorn

  • Privacy:

  • /r/Privacy
  • /r/PrivacyToolsIO
  • /r/Tor
  • /r/StallmanWasRight/

  • Forks:

  • /r/PaleMoon
  • /r/Waterfox

  • Other browsers:

  • /r/Browsers

  • /r/Chrome
  • /r/InternetExplorer
  • /r/Maxthon
  • /r/OperaBrowser
  • /r/Safari
  • /r/VivaldiBrowser

  • Similar Products:

  • /r/Android

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