Privacy and security settings
Learn how to keep your information safe and secure with Firefox's private browsing, password features and other security settings.
Does Firefox share my location with websites?
Learn what information Firefox sends to web sites about your location and how to use and manage location-aware features of your browser.
Configure DNS over HTTPS protection levels in Firefox
DNS over HTTPS (DoH) is a recommended feature that enhances privacy for everyone. When you type a web address into your address bar, Firefox sends a secure DNS request to look up the IP address for that website over the Internet and make sure it's secure. In this article, we explain all the DoH protection levels you can configure from the Firefox settings.
Automatically fill in credit card data on Web forms
Manage credit card autofill settings in Firefox version 81 and above.
SmartBlock for Enhanced Tracking Protection
SmartBlock lets pages load more fully, with less breakage — all while keeping those tracking scripts blocked.
HTTPS-Only Mode in Firefox
Learn more about HTTPS-Only Mode which forces all connections to websites to use HTTPS.
Global Privacy Control
How to make Firefox advise websites that you visit not to sell or share your browsing information.
Sponsored shortcuts on the New Tab page
Working with its advertising partners, Mozilla may place sponsored shortcuts on the default Firefox home page and New Tab page. Learn more.
Enhanced Tracking Protection in Firefox for desktop
Enhanced Tracking Protection in Firefox automatically protects your privacy while you browse.
Allow or block media autoplay in Firefox
Firefox prevents media from playing automatically on websites you visit, unless you grant permission. Learn more about this feature.
Site Information panel
The Site Information panel in Firefox tells you about a website's connection security and identity. Learn more.
Automatically trust third-party root certificates
Root certificates are the backbone of the security system that underpins HTTPS web traffic. Firefox, like most web browsers, includes a pre-installed set of trusted root certificates.
How to manage your camera and microphone permissions with Firefox
How to enable or block sites from accessing your camera and microphone on your desktop or mobile device.
Why do I get a harmful download message when downloading Firefox on Windows?
You may see a warning that the installer could harm your device when attempting to download Firefox from another browser. Learn more.
Why are some add-ons not allowed on sites restricted by Mozilla?
Learn why some Firefox add-ons might not work on certain websites and how to manage those extensions to enhance your browsing experience.
Autofill logins on Firefox
Firefox lets you control whether or not to autofill your logins and passwords.
What if I'm locked out of Two-Step Authentication?
Disable two-step authentication or use a backup authentication code to regain access to your account if you've been locked out of two-step authentication login.
How Firefox securely saves passwords
Learn how Firefox securely saves your passwords.
How Firefox Sync keeps your data safe even if TLS fails
Firefox Sync encrypts your data before it ever leaves your device, and ensures that the password to unlock this encryption is never transmitted to the server.
Telemetry collection and deletion
Firefox collects telemetry data by default. We collect this data to help improve the performance and stability of Firefox. Learn more.
How to generate a secure password in Firefox
Learn how Firefox can create a secure password for you when creating a new online account.
Understand Encrypted Client Hello (ECH)
Firefox version 118 introduced a security enhancement called Encrypted Client Hello (ECH), enabled by default in Firefox 119. Learn more.
Encrypted Client Hello (ECH) - Frequently asked questions
Encrypted Client Hello (ECH) is a security feature in major Web browsers, available in Firefox 118 and enabled by default in Firefox 119. Learn more.
Site Permissions panel
If you allow or block permissions for a website, the address bar will show a Permissions icon that opens the Permissions panel. Learn more.
Total Cookie Protection and website breakage FAQ
Learn about Enhanced Tracking Protection and Total Cookie Protection in Firefox, and how to troubleshoot and report possible site breakage.
What is the Accessibility Service Indicator?
This article describes the implications of allowing or restricting access to accessibility services and its effect on performance.
Primary Password is replacing Master Password
Primary Password is replacing Master Password. Learn more about why we are making this change.
"Certificate cannot be trusted" warning in Kazakhstan
Firefox is blocking the use of Kazakhstan root CA certificate to protect your privacy. Learn more about how to stay safe.
My privacy settings were changed from Custom to Standard
If your Custom settings match the settings in Standard, you will be switched back to Standard. This will not affect your settings.
WebXR Permission Info Page
This article explains Firefox's virtual reality features and how to manage permissions for websites that ask to access your VR devices.
Unlink your Google or Apple ID from your Mozilla account
If you no longer want to use your Google or Apple account to sign in to your Mozilla account, you can unlink it in your Mozilla account settings.
Firefox asks for authentication (password, voice, face or fingerprint) when accessing passwords
Learn more about this Firefox anti-snooping feature designed to protect your logins and passwords from unauthorized access.
Telemetry collection- Windows default browser trends
This article explains one example of how Firefox collects and uses telemetry data with the Default Browser Agent Windows scheduled task.
Block deceptive content and dangerous downloads in Firefox
Make sure these settings are enabled to prevent unwanted downloads and block suspicious content on your children's sessions.
