How do I backup ZOOM settings [+/-] for webpages visited - Recovering from Firefox RESET

see this question thread - - locking


What is best way to backup my ZOOM settings (the +/-) i use on my toolbar.

I use this extensively. Almost 100% of every page i visit has a preferred zoom set. This is a critical piece of configuration for me. so I would like to understand 1) how do i back it up 2) how to I automate the backup (like bookmarks) so it occurs automatically at a schedule (either set by firefox or set in a preference by me)