this post was submitted on 10 Oct 2025
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In Windows it's the same. Though the parameter is
-P
(uppercase) not-p
. That's why the comment said "it’s hidden behind a startup parameter".I dont know about Mac, but in Linux you can just manually make a
.desktop
file to have as a shortcut to callfirefox -P
, or better a shortcut to a specific profile withfirefox -P <profile>
. Though what I often do is keep a bookmark toabout:profiles
and open a new window from there.I might try this next time I launch. Just launch one, go into profiles, and launch the second one.