Firefox Release for everyday browsing
Use the standard Firefox release if you do not need a special deployment or testing build. It receives regular security fixes, stability updates and fully released browser features.
Download Firefox for
Windows
Windows
Choose Firefox for Windows, macOS, Linux, Android or iOS. Most users should install the standard Release build. ESR is available for longer support cycles and specific older systems, while Beta, Developer Edition and Nightly are intended for testing and development.
Choose the Firefox versionthat matches how you use the browser.
Firefox ESR for long-term support
Extended Support Release changes major features less often and is designed for organizations and managed deployments. Firefox 115 ESR is also the supported Firefox line for Windows 7, 8 and 8.1 and macOS 10.12 through 10.14.
Firefox Beta and Developer Edition
Beta previews features approaching stable release. Developer Edition pairs pre-release Firefox features with developer-focused defaults and tools for web development and compatibility testing.
Firefox Nightly for early testing
Nightly contains the earliest Firefox development changes and updates frequently. It is intended for testing, experimentation and bug reporting rather than maximum day-to-day stability.
Choose the Firefox build for your device
Desktop users should check the operating system and processor architecture before installing. Android and iOS use their own mobile Firefox apps, while Linux users can choose an appropriate binary or package method.
Windows and macOS
Current Firefox releases support Windows 10 or later and macOS 10.15 or later. Windows downloads include 64-bit, 32-bit, ARM64 and MSI options where available, while macOS supports Intel and Apple silicon Macs.
Linux, Android, iOS and Chromebook
Firefox for Linux is available for 64-bit x86 and ARM64 systems, and Debian-based distributions can use Mozilla’s APT repository. Android and iOS use their respective mobile builds. Chromebook users can follow the Firefox ChromeOS installation options supported by their device.
Install Firefox and move your browser data
Choose the correct build, install Firefox, then import supported bookmarks, saved passwords and browsing history. If you use Firefox on more than one device, you can sign in with a Mozilla account and enable Firefox Sync.
Choose your device and Firefox version
Select Windows, macOS, Linux, Android or iOS. On desktop, use Release unless you specifically need ESR, Beta, Developer Edition or Nightly.
Install Firefox
Run the Windows installer, open the macOS download, install the Linux build or package, or install Firefox through the appropriate mobile distribution for Android or iOS.
Import data and set up Firefox Sync
Move supported bookmarks, saved passwords and browsing history from another browser. Sign in with a Mozilla account if you want Firefox Sync to keep selected browser data available across devices.
Firefox Download and Installation FAQ
Answers about Firefox downloads for desktop and mobile, release channels, processor architecture, older operating systems and installation choices.
How do I download Firefox for Windows?+
Choose Windows above and use the Firefox download for your system. Current Firefox releases support Windows 10 or later. Windows 7, 8 and 8.1 use Firefox 115 ESR instead of the current standard release.
Which Firefox version should I install on a Mac?+
Most supported Macs should use the current Firefox Release. Current standard releases support macOS 10.15 or later. macOS 10.12, 10.13 and 10.14 use Firefox 115 ESR.
Should I choose Firefox for Linux 64-bit or ARM64?+
Use Linux 64-bit on most Intel and AMD desktop systems and ARM64/AArch64 on compatible 64-bit ARM devices. Debian, Ubuntu and related distributions can also install Firefox through Mozilla’s APT repository.
How do I install Firefox on Android or iPhone?+
Choose Firefox for Android or Firefox for iOS and install the mobile build for your device. Android and iOS use mobile app distribution and update systems rather than Windows, macOS or Linux installers.
What are Firefox Release, ESR, Beta, Developer Edition and Nightly?+
Release is the stable Firefox build recommended for most users. ESR uses a longer support cycle. Beta previews near-release features, Developer Edition is aimed at web development and testing, and Nightly contains the earliest development changes.
Can I install Firefox on an older Windows or macOS version?+
Firefox 115 ESR is the supported line for Windows 7, 8 and 8.1 and macOS 10.12 through 10.14. Mozilla currently provides security updates for Firefox 115 ESR on those systems through March 2027.
Choose a Firefox language, platform or release
Use Firefox Release for most everyday browsing, or choose ESR, Beta, Developer Edition or Nightly when you need a different support or testing channel.