Muehe, 1 month ago Firefox supports this natively. Under “Settings > Privacy and Security > Cookies and Site Data” set the “Delete site data when Firefox is closed” checkbox, and use the “Manage Exceptions” button to add websites you want to allow.
Firefox supports this natively. Under “Settings > Privacy and Security > Cookies and Site Data” set the “Delete site data when Firefox is closed” checkbox, and use the “Manage Exceptions” button to add websites you want to allow.