I’m coming from chrome and I use something called deadname remover, which removes my old name and replaces it with my new name. On chrome I have it set to certain sites so it doesn’t replace the name of everyone who’s name is my deadname. But on firefox i can’t find a way to do that no matter how hard i try. Is there any way. Even if it comes to modifying firefox itself with code i want to find a way to do this

Thanks, Sashia