Warning: Nightly is an unstable testing and development platform. By default, Firefox Nightly automatically sends data to Mozilla — and sometimes our partners — to help us handle problems and try ideas. Learn what is shared: https://www.mozilla.org/en-US/privacy/firefox/#pre-release

Firefox Nightly gets updated every day and is designed to showcase the more experimental builds of Firefox. The Nightly channel allows users to experience the newest Firefox innovations in an unstable environment and provide feedback on features and performance to help determine what makes the final release.

Found a bug? Report it at: https://bugzilla.mozilla.org/enter_bug.cgi?product=Fenix

Want to know more about the permissions Firefox requests?: https://mzl.la/Permissions

See our list of supported devices and latest minimum system requirements at: https://www.mozilla.org/firefox/mobile/platforms/

Mozilla marketing: In order to understand the performance of certain Mozilla marketing campaigns, Firefox sends data, including a Google advertising ID, IP address, timestamp, country, language/locale, operating system, app version, to our third party vendor. Learn more by reading our Privacy Notice here: https://www.mozilla.org/privacy/firefox/

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Firefox Nightly for Developers is an experimental version of the popular Firefox web browser designed specifically for developers. It offers early access to the latest features and enhancements, allowing developers to test and provide feedback on upcoming changes.

Key Features:

* Cutting-Edge Features: Firefox Nightly provides developers with early access to upcoming features, including new APIs, developer tools, and performance improvements.

* Developer Tools: Firefox Nightly comes with a comprehensive suite of developer tools, including the Web Console, Debugger, Network Monitor, and Page Inspector. These tools allow developers to inspect and debug web pages, track network activity, and monitor performance.

* Customizable Toolbar: The toolbar can be customized to include frequently used tools and shortcuts, providing developers with quick access to essential features.

* Experimental Features: Firefox Nightly enables developers to experiment with experimental features that are not yet available in stable releases. These features may be unstable or incomplete but offer a glimpse into the future of web development.

Benefits for Developers:

* Early Access to Features: Firefox Nightly allows developers to stay ahead of the curve by gaining early access to upcoming features. This enables them to provide feedback and help shape the development process.

* Testing and Debugging: The developer tools in Firefox Nightly provide powerful capabilities for testing and debugging web applications. Developers can identify and resolve issues quickly, improving the quality and efficiency of their development process.

* Experimentation and Innovation: Firefox Nightly's experimental features encourage developers to explore new possibilities and push the boundaries of web development.

Installation and Updates:

Firefox Nightly can be installed alongside the stable version of Firefox. It is recommended to use a separate profile for Nightly to avoid potential conflicts. Updates are released frequently and can be applied automatically or manually.

Note: Firefox Nightly is an experimental version and may contain bugs or stability issues. It is not recommended for general use or production environments. Developers should use Nightly for testing and development purposes only.