| image.animation_mode once | Play animated images only once |
| media.autoplay.blocking_policy 2 | Try to block autoplay |
| privacy.firstparty.isolate true | Isolate 1st party cookies to prevent tracking over multiple domains |
| privacy.resistFingerprinting true | More resistent to fingerprinting |
| geo.enabled false | If sites request geo-location FF uses google's location service and sends IP, nearby wifi access point and random client ID |
| media.navigator.enabled false | Disallow sites to track status of mic and cam status |
| network.dns.disablePrefetch true | Because of Privacy Implications |
| network.prefetch-next false | Performance in page loading to the cost of privacy |
| dom.event.clipboardevents.enabled false | Disables sites gettings notified when you copy to clipboard |
Ressources for the table above