Advanced and experimental features

Learn tips beyond the basics and try features before they're released to the public.

• Multi-Account Containers Multi-Account Containers is a Firefox WebExtension that lets you separate your work and personal browsing.
• Firefox Nightly Error Collection Learn about Firefox Nightly's error collection policy.
• About SHIELD Studies How to opt out of studies
• Test Pilot - try Firefox's experimental features Test Pilot is a program to allow early adopter users to test experimental new Firefox features. Learn how to participate.
• New Test Pilot experiments Try out the newest experimental Firefox features on Test Pilot.
• Using a dedicated profile for Firefox Nightly How to create dedicated profiles for Firefox and Nightly to avoid profile corruption.
• About Firefox Pioneer Learn more about this feature of SHIELD studies.
• Opt out of DNS over HTTPS Studies Learn more about the DNS over HTTPS study.