Well, but there are alternative extensions which do the same, clear cookies and all related datas from the websites when you leave them, except the whitelisted sites. I also used it before, but SiteBleacher is easier to handle
https://github.com/Cookie-AutoDelete/Cookie-AutoDelete
But in the Mozilla store read "About this Extension"
https://addons.mozilla.org/en-US/firefox/addon/cookie-autodelete/
There are also other FOSS extensions with a similar function.
https://karelkubicek.github.io/post/cookieblock
https://addons.mozilla.org/en-US/firefox/addon/forget_me_not/
https://github.com/JustOff/cookies-exterminator
Also some others, but they are proprietary soft.
Well, but there are alternative extensions which do the same, clear cookies and all related datas from the websites when you leave them, except the whitelisted sites. I also used it before, but SiteBleacher is easier to handle
https://github.com/Cookie-AutoDelete/Cookie-AutoDelete
But in the Mozilla store read "About this Extension"
https://addons.mozilla.org/en-US/firefox/addon/cookie-autodelete/
There are also other FOSS extensions with a similar function.
https://karelkubicek.github.io/post/cookieblock
https://addons.mozilla.org/en-US/firefox/addon/forget_me_not/
https://github.com/JustOff/cookies-exterminator
Also some others, but they are proprietary soft.