Yes it can see here: https://addons.mozilla.org/en-US/firefox/addon/cookie-autodelete https://addons.mozilla.org/en-US/firefox/addon/cookie-autode... The only

Yes it can see here: https://addons.mozilla.org/en-US/firefox/addon/cookie-autodelete https://addons.mozilla.org/en-US/firefox/addon/cookie-autode... The only thing it can't do yet is delete local storage due to the API not being implemented.