Disable third-party cookies in Firefox to stop some types of tracking by advertisers
Third-party cookies are cookies that are set by a website other than the one you are currently on. For example, cnn.com might have a Facebook like button on their site. That like button will set a cookie that can be read by Facebook. That would be considered a third-party cookie.
Some advertisers use these types of cookies to track your visits to the various websites on which they advertise. If you are concerned about this, you can disable third-party cookies in Firefox.
Third-party cookie settings are available in the OptionsPreferences page's panel:
- Click the menu button and choose . .
- Select the
- In the drop-down menu next to Accept third-party cookies and site data choose Note: If after browsing with this setting, you realize you can't view properly some of your favorite websites, an intermediate solution is to set it to From visited. That will allow third-party cookies coming from previously visited websites..
- Close the about:preferences page. Any changes you've made will automatically be saved.
Disable third-party cookies
To block third-party trackers or all third-party cookies:
- Click the Firefox menu button
- This takes you to the Content Blocking section of your Firefox OptionsPreferences panel.
- Select the Third-Party Cookies checkbox to block third-party tracking cookies. To block all third-party cookies, change the setting from Trackers (recommended) to All third-party cookies (may cause websites to break).
This takes you to the Cookies and Site Data section of Firefox OptionsPreferences, where you can change the type of cookies blocked.
Enable third-party cookies for specific sites
Some websites may not work properly when third-party cookies are blocked, even with the Trackers (recommended) setting. To enable third-party cookies for specific websites, click the Control Center button in the address bar and click .
For more information, see Turn Content Blocking off on individual sites.