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Some config options to make Firefox faster (updated)
Over time, I collected some options to make Firefox really fast.
WARNING! NO WARRANTY, use on your own risk!
If you know what you're doing, go to 'about:config' and edit the listed values accordingly.
Hint: Double-click boolean values to toggle true/false.
###########################
If mouse-wheel scrolling is slow, try
general.smoothScroll = false
############################
browser.display.show_image_placeholders false
browser.tabs.animate false
ui.submenuDelay 0
network.prefetch-next true
network.http.pipelining true
network.http.pipelining.ssl true
network.http.proxy.pipelining true
network.http.pipelining.maxrequests 8
network.dns.disableIPv6 true
network.http.max-connections 48
network.http.max-connections-per-server 16
network.http.max-persistent-connections-per-proxy 16
network.http.max-persistent-connections-per-server 8
content.notify.ontimer true
content.switch.threshold 750000
nglayout.initialpaint.delay 0
config.trim_on_minimize true
browser.sessionhistory.max_total_viewers 0
browser.cache.memory.capacity 65536
(new Integer) content.notify.backoffcount 5
(new Boolean) plugin.expose_full_path true
(new Boolean) content.interrupt.parsing true
(new Integer) content.max.tokenizing.time 2250000
(new Integer) content.notify.interval 750000
###########################
More aggressive options:
network.http.pipelining.aggressive true
@MegaPramuk

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commented Mar 30, 2017

Why set network.dns.disableIPv6 to true?
Looking it up, it says that it might even speed up the connections, although it's also stated to be a possible placebo.
Also, what exactly does plugin.expose_full_path do to help speed up things? I couldn't find any relevant information regarding that key, and it's not even a measurement for hardening the browser. So why change the value?

@hheexx

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commented Nov 19, 2017

pipelining is removed in firefox 54

@LOuroboros

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commented Mar 29, 2019

network.http.max-connections-per-server does no longer show up in Firefox 66.0.1
Does it still work if you create it as an Integer preference manually?

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