[satysin]

Firefox profiles are indeed great. Especially as they're so easy to backup and restore across machines, even different OS. Some simple fiddling with installs.ini and profiles.ini then run Firefox with -P as you say and you're good to go.

I've used this process for over a decade, probably more than 15 years now I think about it. Hard to remember! Sadly it doesn't work with Firefox on Ubuntu anymore due to that being a snap package. I'm sure there is a simple enough solution to get it working the same with the snap version but I instead prefer to remove the snap version of Firefox on Ubuntu and use the release directly from download.mozilla.org as I have the download, install and restore all automated for Windows, macOS and Linux so why make my life harder with snaps just for Ubuntu? :)

[beebeepka]

I just copy the profile directory. I managed to implant a profile from windows to manjaro, then Ubuntu. Though I don't remember what I had to deal with in canonical's case and their snaps, it could not have been that hard given that I did it.