Use the Firefox SYNC, the best way to backup your content

You can use Firefox Sync to synchronize your bookmarks, passwords, settings, history, add-ons, and tabs with Firefox on other computers. First just set up Firefox Sync on your main computer and then add each of the other computers.

How do I set up Firefox Sync? - http://mzl.la/KpeZJw

How do I choose what types of information to sync on Firefox? - http://mzl.la/MnTqus

How do I add a device to Firefox Sync? - http://mzl.la/NYgEvq

Firefox stores the bookmarks and the browsing history in the places.sqlite database file..

There are 10 rotating daily JSON backups (bookmarks-####-##-##.json) in the bookmarkbackups folder within the Firefox profile folder, one for each day that Firefox is started.

• http://kb.mozillazine.org/Backing_up_and_restoring_bookmarks_-_Firefox

Pinned (App) tabs and tab groups are stored in the sessionstore.js file.

• http://kb.mozillazine.org/Profile_folder_-_Firefox

See also:

• https://support.mozilla.org/kb/Recovering+important+data+from+an+old+profile