Is there an add-on for this? If not, what is the alternative for this purpose: to separate work and personal bookmarks? I already do something similar with the tab groups extension and I need this for the bookmarks. Is it possible to easily toggle from one Firefox account to another, just like in Chromium with Google accounts?
I must specify that I want to see the bookmarks so I can't just put the bookmarks in two bookmark folders.
Update 1
I do not want a separate profile for work because I want to have Firefox Sync enabled and a single Firefox account. One of the reasons is that I use common services for which I would have to change the password in both profiles.
To put it in other words, is there a FF extension that shows on the new-tab page (which is for me currently empty) a specific bookmarks directory that can be changed in the settings of that extension or somewhere so I can do it in less than 1 minute?