Mozilla has added Firefox Containers as a built-in preview feature in Firefox 153, giving users a simpler way to keep online accounts and browsing activity separate.
The feature allows people to create distinct spaces for work, personal accounts and privacy-sensitive browsing. Each container stores its own cookies, logins and site data, so activity in one container does not automatically carry over to another.
Previously, users needed the Firefox Multi-Account Containers extension to achieve the same result. Mozilla now plans to bring the functionality directly into the browser.
Firefox Containers Keep Browsing Sessions Separate
Firefox Containers help users log in to multiple accounts on the same website without switching browsers or creating separate Firefox profiles.
For example, a person can keep a work email account in one container and a personal email account in another. The browser treats the sessions separately, which reduces the risk of mixing accounts or exposing work-related browsing to personal sites.
The feature also limits cross-site tracking. Cookies and trackers collected in one container cannot easily follow users into another container.
As a result, someone researching a product in a personal container should be less likely to see related advertising while browsing in a separate work container.
Mozilla Moves Beyond the Containers Extension
Mozilla introduced Containers as a preview in Firefox 153 on July 23. The company said the built-in tool aims to make privacy controls and account separation easier to manage.
The current preview does not yet include every feature available through the existing Firefox Multi-Account Containers extension. Therefore, users who rely on the extension’s full toolset can continue using it while Mozilla develops the built-in version.
Mozilla said the release marks an early step towards making Firefox better suited to the way people divide their online lives between work, personal use and more private sessions.
Firefox Updates Will Move to a Two-Week Schedule
Mozilla also plans to speed up Firefox’s release cycle.
From September 1, the company intends to release browser updates every two weeks instead of once a month. The change should allow Mozilla to deliver completed features, bug fixes and security updates more quickly.
A faster schedule could also reduce the time between the discovery of a security flaw and the arrival of a patch for users.
Mozilla engineering director Sylvestre Ledru said the new approach will create more opportunities to ship ready updates while making releases more predictable.
What Firefox Containers Mean for Users
Firefox Containers offer a practical privacy tool for people who juggle several online identities. Rather than opening separate browsers or repeatedly logging in and out, users can keep different sessions in one place.
The feature may be especially useful for freelancers, remote workers and anyone who manages several accounts across the same services.
With Firefox Containers now moving into the browser itself, Mozilla is making one of its most popular privacy-focused tools easier for more users to access.
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