Firefox Preview Nightly for Developers

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Firefox Preview Nightly is a developmental channel for new Firefox Preview releases. It is intended for advanced s only.

Nightly releases are not tested extensively before being published. They may be unstable; s can expect occasional crashes or data loss.

The Nightly channel allows experienced s and developers to provide on features and performance to help determine what makes the final release.

Please email firefox-preview-@mozilla.com with your comments, or file a bug on : Github.

Firefox Nightly automatically sends to Mozilla. You can read more about telemetry privacy here.