This Firefox addon will prompt you to select a Multi-Account Container whenever you open a new tab.


This is a very simple addon so there's no build process or anything.
- Clone this repository.
- Open Firefox and navigate to
about:debugging
. - Click on "This Firefox" in the sidebar.
- Click on "Load Temporary Add-on" and select the
manifest.json
file from this repository.
Once installed, open a new tab and you will be prompted to select a Multi-account Container (but only if you're not already in a container).
- You will need to enable Multi-Account Containers to use this add-on.
- I was experimenting with Github Copilot while building this so there's some terrible code in here that I haven't got time to fix.
- Thank you to KazuAlex for making the New Tab Page Container which inspired this.