- It allows you to open multiple sessions of the same website simultaneously by isolating cookies in separate containers.
- It improves privacy by preventing tracking companies from creating a unique user profile.
- It offers customization options through colors and icons and the ability to assign static websites to specific containers.
Have you ever been stuck trying to open two Twitter or Gmail accounts at the same time and had to resort to incognito mode or, even worse, install a different browser? It's quite a hassle, especially when you manage both professional and personal profiles on the same computer. Luckily, there's an official Mozilla tool that solves this problem completely, allowing you to easily separate your browsing sessions.
We're talking about Firefox Multi-Account Containers , an extension that essentially creates watertight compartments within your Firefox window. Imagine having multiple browsers running in parallel but under the same roof; this is not only a productivity marvel but also a bastion of privacy , as it prevents cookies from one site from tracking what you do in another container.
What is this extension actually for?
The main benefit is that it allows us to manage multiple sessions of the same web service simultaneously. Forget about logging out and back in every five minutes; you can have your work email in one folder and your personal email in another, both open in adjacent tabs.
But there's more, as this tool is ideal for community managers, content creators, or freelancers who manage accounts for multiple clients on platforms like Microsoft Teams, Outlook, or social media. Furthermore, by isolating cookies, advertising companies can't build a single profile of you; instead, they'll see fragmented profiles based on the container you use, making it much harder to track your digital footprint.
Steps to install the plugin
Getting started is a breeze. Just head to the Mozilla Add-ons store , search for "Multi-Account Containers," and click the "Add to Firefox" button. Once the browser asks for confirmation, accept the permissions, and it will be active in your toolbar, represented by an icon of three squares with a plus sign.
Detailed setup and usage
Upon installation, the system offers four default spaces: Personal, Work, Banking, and Shopping. However, its most powerful feature is the ability to create your own custom containers . To do this, right-click on the "Open tab" button, select "Manage containers," and click "Add new." Here you can choose a name, a distinctive color, and an icon to help you quickly identify it.
To open a website in one of these spaces, you have several options. You can right-click the new tab button and choose the desired container, or simply open the tab and then assign the container from the extension's menu. You'll see the tab marked with a colored line, indicating that this session is isolated from the rest.
Advanced tricks to optimize workflow
If there's a website you frequently use with a specific account, you can force it to always open in the same container . To do this, go to the website, open the extension's menu, and select the "Always Open This Site in…" option. From then on, Firefox will remember your choice and automatically redirect you to the assigned container, saving you unnecessary clicks.
Another very useful option is to configure your browser so that every time you open a new tab, it asks you which container you want to use . This is activated in the container management menu by checking the corresponding box. Additionally, if you have a chaotic number of open tabs, you can use the "Sort Tabs by Container" function to group them all by color and keep your browser much more organized.
It's important to note that this functionality is exclusive to Firefox due to its container architecture. If you use Chromium-based browsers like Chrome, Edge, or Opera, you won't find an identical solution, but you can try SessionBox . While it requires creating an account and works differently, it achieves the goal of maintaining separate sessions, although it doesn't reach the level of native integration offered by Mozilla.
This tool transforms the way we browse by allowing us to separate digital identities and optimize the management of multiple accounts without sacrificing privacy. Thanks to cookie segmentation and personalized spaces, we can keep our work and personal environments completely separate, preventing mass tracking and eliminating the need to switch between browsers or private windows.