What Are Firefox Containers and Why Every Browser Needs Them

Browser makers are working hard to build new privacy features that would protect users when surfing the web, and up to this point, Mozilla seems to be one of the innovators when it comes to such capabilities bundled with browsers.

Mozilla has launched a so-called Multi-Account Containers add-on that technically enables Firefox to separate web browsing into containers where users connect to various accounts online.

In just a few words, the purpose of this feature is to allow a better online account separation, technically blocking websites from reading each other’s data. Each container comes with its very own storage and cookies, and more importantly, such content can only be read by the website loaded in that container.

Basically, what happens in one container stays in that container, so you can consider this a walled garden that protects your account data from being read by another website than the one you’re browsing.

Mozilla groups containers in several catego…