Global Privacy Control

Introduced in Firefox version 120, you can make use of Global Privacy Control (GPC) to automatically notify websites not to sell or share information about your browsing session on that website.

GPC operates as a “Do Not Sell” mechanism in some US states such as California, Colorado and Connecticut. It may also be used to indicate an opt-out of targeted advertising or general request to limit the sale or sharing of your personal data in those jurisdictions, as well as in jurisdictions such as the EU, UK, Nevada, Utah and Virginia.

To turn on this preference:

1. In the Menu bar at the top of the screen, click Firefox and then select Preferences or Settings, depending on your macOS version.Click the menu button and select Settings.
2. In the Privacy & Security panel, scroll down to Website Privacy Preferences and click the Tell websites not to sell or share my data option.
3. Close the Settings page. Any changes you've made will automatically be saved.