Example of what i want to do: I'm browsing ''Website'' and i click and open a link. Examples: https://Website.com/P/-this-site-doesnt-exist--68290.html or https://Website.com/P/-this-is-also-an-example--34846.html I want Firefox to automatically delete "-this-site-doesnt-exist-" or "-this-is-also-an-example-" whenever i open any of them. So opening them would instead open: https://Website.com/P/-68290.html or https://Website.com/P/-34846.html Can this be done?