Install the resist fingerprinting toggle
Firefox
A place to discuss the news and latest developments on the open-source browser Firefox
Keep in mind that having an extensively customised setup makes you more fingerprintable - just the fact that some things are not visible to a website makes you unique. Generally, most of the defaults will be best for everybody - especially when it comes to options that are not exposed in the UI (i.e. through about:config
).
What could be interesting for you is just running uBlock Origin and have it block all JavaScript by default. That'll block most of the scripts that potentially do tracking (and that Firefox doesn't block natively, e.g. because they also provide functionality), and you can relatively easily enable them on a per-site and per-script basis.
There are tradeoffs.
I think you should set your user agent and turn on resist fingerprinting at minimum. Ideal you should install ublock and switch the security settings to strict.
on my main 'working' pc, i just have two firefox. one regular release channel, locked down pretty tight--scripts don't even run unless allowed, used for the bulk of the internets; and then a developer edition with a different config and different selection of addons that i use for the trusted and internal sites and 'my' stuff.
dev.ed is made to co-exist with 'regular' firefox; can even run both at the same time without any hoop jumping as dev.ed profiles are separate.