The Firefox Multi-Account Containers extension lets you carve out a separate box for each of your online lives – no more opening a different browser just to check your work email! Here is a quick video showing you how it works. Under the hood, it separates website storage into tab-specific Containers. Cookies downloaded by one Container are not available to other Containers. With the Firefox Multi-Account Containers extension, you can... Sign in to two different accounts on the same site (for example, you could sign in to work email and home email in two different Container tabs. Keep different kinds of browsing far away from each other (for example, you might use one Container tab for managing your Checking Account and a different Container tab for searching for new songs by your favorite band) Avoid leaving social-network footprints all over the web (for example, you could use a Container tab for signing in to a social network, and use a different tab for visiting online news sites, keeping your social identity separate from tracking scripts on news sites) After installing the Firefox Multi-Account Containers extension, click the Containers icon to edit your Containers. Change their colors, names, and icons. Long-click the new tab button to open a new Container tab.

Privacy in Firefox Multi-Account Containers

The Firefox Multi-Account Containers extension does not send any information to Mozilla.

Haven't I seen this in Firefox before? Firefox Multi-Account Containers was first introduced as "Containers" available only in Firefox Nightly. It went on to be a Test Pilot Experiment, where we improved the user experience and added new features. Now it exists here as an extension that can be installed by all Firefox users. Although you can still use the feature built into Firefox Nightly, we recommend using this extension as it has a richer user experience.