Firefox lets you tell websites that you do not want them to track your browsing behavior. This article explains what tracking is and how to turn on the Do Not Track feature.

See Tips to protect your online privacy for other ways to keep your browsing private.

Tracking

Most major websites track their visitors' behavior and then sell or provide that information to other companies. This information can be used to show ads, products or services specifically targeted to you. Firefox has a Do Not Track feature that lets you tell every website you visit, their advertisers, and content providers that you don't want your browsing behavior tracked.

Honoring this setting is voluntary — individual websites are not required to respect it. Websites that do honor this setting should automatically stop tracking your behavior without any further action from you. Turning on this feature will not affect your ability to log in to websites nor cause Firefox to forget your private information, such as the contents of shopping carts, location information or login information.

Note: You may see less relevant advertising on websites if you have the Do Not Track option activated.

The Do Not Track feature is turned off by default, except in Private Windows, where it is always on by default. To always use Do Not Track:

Click the menu button Options . Preferences . Select the Privacy & Security panel. Find the Tracking Protection section. Underneath Send websites a "Do Not Track" signal that you don't want to be tracked , choose the Always setting. Close the about:preferences page. Any changes you've made will automatically be saved.

Click the menu button and select Content Blocking . This takes you to the Content Blocking section of your Firefox Options Preferences Privacy & Security panel. Under Send websites a "Do Not Track" signal that you don't want to be tracked, choose Always. Close the about:preferences page. Any changes you've made will automatically be saved.