What does it do?
facebook container works by isolating your Facebook identity into a separate container that makes it harder for Facebook to track your visits to other websites with third-party cookies.

How does it work?
When you first install this extension, it will close your Facebook tabs, delete your Facebook cookies and log you out of Facebook.
The next time you navigate to Facebook, the site will load in a new tab. The tab is coloured blue to indicate you are in the container.
You can log in and use facebook as you normally do when in the Facebook Container. If you click on a non-Facebook link or navigate to a non-facebook website in the URL bar, these pages will load outside of the container.
clicking facebook share buttons on other browser tabs will load them within the Facebook Container. You should know that using these buttons passes information to Facebook about the website that you shared from.

Which features will not function on other websites?
Because you will be logged into Facebook only in the container, embedded facebook comments and like buttons in tabs outside the container will not work. This prevents facebook from associating information about your activity on websites outside of Facebook with your Facebook identity.

In addition, websites that allow you to create an account or log in using your Facebook credentials will generally not work properly. Because this extension is designed to separate facebook use from use of other websites, this behavior is expected.

What does Facebook Container NOT protect against?
It is important to know that this extension doesn’t prevent Facebook from mishandling the data that it already has, or permitted others to obtain, about you. Facebook will still have access to everything that you do while you are on Learn more

Other Containers
Facebook Container leverages the containers feature that is already built into Firefox. When you enable facebook container, you may also see containers named personal, Work, Shopping and Banking whilst you browse. If you wish to use multiple containers, you’ll have the best user experience if you install the Firefox Multi-account containers extension. Learn more on our support site.

Known issues
When Facebook is open and you navigate to another website using the same tab (by entering an address, doing a search or clicking a bookmark), the new website will be loaded outside of the Container and you will not be able to navigate back to facebook using the back button in the browser.

NOTE: If you are a Multi-account containers user who has already assigned facebook to a Container, this extension will not work. In an effort to preserve your existing container set-up and logins, this add-on will not include the additional protection to keep other sites out of your Facebook Container. If you would like this additional protection, first unassign filing an issue. Thank you!