if you trust mozilla, firefox sync handles most of that - bookmarks, history, passwords, extensions and some of their settings, etc; cookies and localstorage aren't copied over, for e.g. logged-in sites and such.
this post was submitted on 06 May 2025
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Sync is mostly for bookmarks, history related stuff, and a few sparse settings. But it doesn't sync a ton of stuff like customization, addon settings, and so on.
Eh, I've had lukewarm luck that Firefox sync works for it over the years I flip flop around browsers and installs.
I'd rather do it right the first time than flipping a coin that it works this time.
Copying the profile folder should do it
You should also copy profiles.ini (which indicates the path of the working/available profiles)
Generally speaking, this should also work for other forks, but it might depend on which versions the forks are based on. If they are too behind the version that the profile is from then there might be "forwards compatibility" issues, for example in the way specific files/databases are structured (but maybe not, this is just a guess).
Also note that since forks tend to have different default values for some settings then if you didn't explicitly set them through a user.js file or directly in prefs.js (or another method) then you would get the default from the fork instead of the one from the main version.
Will this copy saved passwords as well? They might not want saved personal passwords to go on the work computer.
Yes, it will copy everything related to that profile. The passwords are stored in the key4.db file so it shouldn't be copied in that situation.
Then there's also the sync feature which might import the passwords even if the file has been deleted, so the sync needs to be disabled on the work pc.
Cool, didn't know where they were stored exactly. Thanks for investigating :)
Copying the profile folder should do it
You should also copy profiles.ini (which indicates the path of the working/available profiles)
I see, thank you. That seems to be what I found out when I researched this as well.
If they are too behind the version that the profile is from then there might be "forwards compatibility" issues
Good point. I'm still using Mozilla's firefox, but am planning to try out Zen Browser, or go with Waterfox if Zen's Arc Browser style isn't up to my needs. For example, I'm very happy with the sideberry add-on on firefox.
Waterfox is always out of date (and isn't great imo), but zen is quite nice and as a bonus is always on the latest version of ff
Oh that's a shame. Well I guess I'll try Zen then
see simon's comment under my original comment and my reply, regarding passwords/sync