It does what it says! THANK YOUU!!! It asks for a lot of things when you install it, but then all ok -- only 4 stars because I personally prefer to "detach" the tabs, instead of going all over everything everytime... case: having my social media profile running, my firefox has all the extensions that I need/want, and I install the social media as a PWA... but then I have to do all over again as in the PWA there's a new profile, so no session, no extensions, nothing... I think this is the intention, but would be nice to have an option "use the base firefox profile instead of a new one"