Firefox has the function of deleting cookies when closing the browser. It also has exceptions to not delete cookies from frequently visited websites.
Today, to add exceptions, you have to go to the settings every time, which is quite annoying.
My proposal is to add a button that will add or remove the website on which the current user is to the exceptions.
The button could be where the extension icons are and the icon would display whether the web page is in exception or not. Extensions work the same way, but the function in firefox works better and always deletes all cookies.
This is what it looks like in extensions:
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I like this idea, and I would like to suggest something similar:
I typically check to see under which domain cookies are identified and then add it to the list of exceptions. A button to add an exception for selected site data would be very convenient.