Firefox about:config privacy settings
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about:config settings to harden the Firefox browser. Privacy and performance enhancements.

To change these settings type 'about:config' in the url bar. Then search the setting you would like to change and modify the value. Some settings may break certain websites from functioning and rendering normally. Some settings may also make firefox unstable.

I am not liable for any damages/loss of data.

Not all these changes are necessary and will be dependent upon your usage and hardware. Do some research on settings if you don't understand what they do. These settings are best combined with your standard privacy extensions (HTTPS Everywhere, NoScript/Request Policy, uBlock origin, agent spoofing, Privacy Badger etc), and all plugins set to "Ask To Activate".

Some of these settings can actually make you more unique in some ways. There is a trade off. Evaluate your browsers fingerprint:

You can check current connections the your browser is making via about:networking

More information about most prefs, their values and effects can be found in mozilla docs here:


dom.event.contextmenu.enabled = false Don't allow websites to prevent use of right-click, or otherwise messing with the context menu. dom.event.clipboardevents.enabled = false Don't allow websites to prevent copy and paste. Disable notifications of copy, paste, or cut functions. Stop webpage knowing which part of the page had been selected. network.IDN_show_punycode = true Show punycode. Help protect from character 'spoofing' eg: -> аррӏе.com [IDN homograph attacks](


plugins.enumerable_names = blank Disable site reading installed plugins. network.http.sendRefererHeader = 0 Tells website where you came…
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