Skip to content

Performance Tweaks For FireFox

Firefox Tweaks for increased Speed and Performance

This article has been written specifically about improving the performance of the FireFox browser. If you are having problems regarding performance in general then I would suggest looking into other areas first before tweaking your browser settings.

I have written a specific article about performance tuning your PC, Network and Browser here: which will take you through all the steps required to diagnose and resolve performance issues related to your computer or network.

For those of you who just want a very simple fast performing safe and secure browser to use to surf the net then I would suggest using Google Chrome.

The following guide should only be attempted by those people who are comfortable with changing core application settings. For those people who want to increase browser performance without fiddling about with the configuration I would recommend the following:

-Use the free to download application FireTune which will modify some of the same settings that I am going to list automatically.

-Use the TuneUp Utilities Application which will modify some FireFox settings as well as numerous other settings related to Browser performance, TCP/IP settings, Disk space, registry, un-used programs, CPU and Memory management and numerous other performance tweaks.

Otherwise go to about:config in the address bar of FireFox and enter the “here be dragons” section.

Most of these options will already exist but if they don’t you can add them to the config by right clicking, selecting New (boolean, string, integer) adding the the correct name and then the correct value. Obviously if the value is a number you choose integer and if its true or false boolean otherwise its a string.

Before doing any changes you should make a backup either manually by writing down current settings or using FireTune to do a backup or just copy the current settings from C:\Program Files\Mozilla Firefox\defaults\pref. Obviously if you saved your version of Firefox somewhere other than Program Files then you should look there.

Do a page load speed test before and after any changes from to see if the changes have made any difference always making sure that the browser cache is cleared before each test to make the comparisons fair.

To find out what each tweak does just append the full name to this URL


network.http.max-connections = 30

network.http.max-connections-per-server = 15

network.http.max-persistent-connections-per-proxy = 24

network.http.max-persistent-connections-per-server = 8

network.http.pipelining true

network.http.proxy.pipelining true

network.http.pipelining.firstrequest false

network.http.pipelining.maxrequests 8

network.http.request.max-start-delay 0

network.prefetch-next false

network.ftp.idleConnectionTimeout 300

network.http.keep-alive.timeout 30

browser.history_expire_days_min 10

browser.cache.memory.enable true

The following option depends on your RAM

  • For RAM over 2GB I use 65536
  • For RAM sizes between 512MB and 1GB, start with 15000.
  • For RAM sizes between 128MB and 512M, try 5000

The following article will list out the default values for this option.

browser.cache.memory.capacity = 65536 (see above for details)

content.interrupt.parsing[boolean] true








network.dnsCacheEntries [integer] 255

network.dnsCacheExpiration [integer] 86400

config.trim_on_minimize[boolean] true

nglayout.initialpaint.delay[integer] 100

This setting will disable 3rd party cookies from being saved. The possible values are 0 which accepts all cookies, 1 only accept cookies from the same server and 2 disable all cookies. Set it to 1 to block 3rd party cookies.

network.cookie.cookieBehavior 1

Optional – May increase performance but will also reduce usability so choose carefully

Limits the maximum number of pages stored in memory in such a way that they don’t have to be re-parsed when pressing Back and Forward. If you, like me, are not using the Back and Forward buttons that much but rather tabs then I see no reason for Firefox to keep a lot of memory with this.

browser.sessionhistory.max_total_viewers change to 1 (default: -1)

Disable Extension Compatibility Checks so that each time you load Firefox it doesn’t check for new versions of your extensions. You must remember to do this manually from time to time if they stop working though!

extensions.checkCompatibility = False

extensions.checkUpdateSecurity = False

Stop Displaying Website Icon (Favicon) in Address bar & On Tab = False

Cool tweaks – Non Performance related

layout.spellcheckDefault 2 – extend spellcheck to form elements inputs as well as textareas

browser.blink_allowed = false – ‘disable blinking text from <blink> true – opens any search results from the search bar in a new tab instead of overwriting existing one

Open View Source in your favourite editor e.g Editplus


view_source.editor.path= Path of Editor e.g C:\Program Files\EditPlus 2\editplus.exe

You also often have a lot of tabs open? This setting will decrease the minimum width of the tab so that more fits in before you need to scroll to see more tabs.

browser.tabs.tabMinWidth change to 70

To Enable Single Click Select URL of address bar use the below about:config Tweak

browser.urlbar.clickSelectsAll = True

To disable Single Click Select

browser.urlbar.clickSelectsAll = False

Auto Complete URL while You type at address Bar

browser.urlbar.autoFill true

This is a good hack to trim down that huge auto-complete list on your URL bar. By default it displays maximum 12 URL

browser.urlbar.maxRichResults (pick a number from 1 to 12)

Related Posts with Thumbnails

Posted in Computing, Internet.

Tagged with , , , , .

2 Responses

Stay in touch with the conversation, subscribe to the RSS feed for comments on this post.

  1. krtyuigd says

    thanks for sharing
    i aslo use dsl speed which is an online tool which helps to optimize ur pc performance

Continuing the Discussion

  1. Create Your Own Web Proxy Server – Dark Politricks linked to this post on April 10, 2010

    […] FireFox Performance Tweaks to boost your browsers speed […]

Some HTML is OK

or, reply to this post via trackback.

Support #altnews & keep Dark Politricks alive

Remember I told you over 5 years ago that they would be trying to shut down sites and YouTube channels that are not promoting the "Official" view. Well it's all happening now big time. Peoples Channels get no money from YouTube any more and Google is being fishy with their AdSense giving money for some clicks but not others. The time is here, it's not "Obama's Internet Cut Off Switch" it's "Trumps Sell Everyones Internet Dirty Laundry Garage Sale". This site must be on some list at GCHQ/NSA as my AdSense revenue which I rely on has gone down by a third. Either people are not helping out by visiting sponsors sanymore or I am being blackballed like many YouTube sites.

It's not just Google/YouTube defunding altenative chanels (mine was shut), but Facebook is also removing content, shutting pages, profiles and groups and removing funds from #altnews that way as well. I was recently kicked off FB and had a page "unpublished" with no reason given. If you don't know already all Facebooks Private Messages and Secret Groups are still analysed and checked for words related to drugs, sex, war etc against their own TOS. Personally I know there are undercover Irish police moving from group to group cloning peoples accounts and getting people booted. Worse than that I know some people in prison now for the content they had on their "secret private group". Use Telegrams secret chat mode to chat on, or if you prefer Wickr. If you really need to, buy a dumb phone with nothing for the NSA/GCHQ to hack into. Ensure it has no GPS tracking on it and that the battery can be removed. These are usually built for old people to get used to technology storing only a set of numbers to call. However they have no games, applications to install or other ways people can exploit the computer tracking device you carry round with you most of the day - your smart phone. If you are paranoid ensure that you can remove the battery when travelling around and do so to prevent GPS tracking or phone mast triangulation. Even with your phone in Flight mode or turned off, it can be turned on remotely and any features like front or back cameras, microphones and keylogging software can be installed to trace you.

So if your not supporting this site already which brings you news from the Left to the Right (really the same war mongering rubbish) then I could REALLY do with some..

Even if it's just £5 or tick the monthly subscription box and throw a few pound my way each month, it will be much appreciated. Read on to find out why.


Any support to keep this site would be appreciated. You could set up a monthly subscription for £2 like some people do or you could pay a one off donation as a gift.
I am not asking you to pay me for other people's articles, this is a clearing house as well as place to put my own views out into the world. I am asking for help to write more articles like my recent false flag gas attack to get WWIII started in Syria, and Trump away from Putin. Hopefully a few missiles won't mean a WikiLeaks release of that infamous video Trump apparently made in a Russian bedroom with Prostitutes. Also please note that this article was written just an hour after the papers came out, and I always come back and update them.

If you want to read JUST my own articles then use the top menu I have written hundreds of articles for this site and I host numerous amounts of material that has seen me the victim of hacks, DOS plus I have been kicked off multiple hosting companies, free blogging sites, and I have even had threats to cease and desist from the US armed forces. Therefore I have to pay for my own server which is NOT cheap. The more people who read these article on this site the more it costs me so some support would be much appreciated.

I have backups of removed reports shown, then taken down after pressure, that show collusion between nations and the media. I have the full redacted 28/29 pages from the 9.11 commission on the site which seems to have been forgotten about as we help Saudi Arabia bomb Yemeni kids hiding in the rubble with white phosphorus, an illegal weaapon. One that the Israeli's even used when they bombed the UN compound in Gaza during Operation Cast Lead. We complain about Syrian troops (US Controlled ISIS) using chemical weapons to kill "beautiful babies". I suppose all those babies we kill in Iraq, Yemen, Somalia and Syria are just not beautiful enough for Trumps beautiful baby ratio. Plus we kill about 100 times as many as ISIS or the Syrian army have managed by a factor of about 1000 to 1.

I also have a backup of the FOX News series that looked into Israeli connections to 9.11. Obviously FOX removed that as soon as AIPAC, ADL and the rest of the Hasbra brigade protested.

I also have a copy of the the original Liberal Democrats Freedom Bill which was quickly and quietly removed from their site once they enacted and replaced with some watered down rubbish instead once they got into power. No change to police tactics, protesting or our unfair extradition treaty with the USA but we did get a stop to being clamped on private land instead of the mny great ideas in the original.

So ANY support to keep this site running would be much appreciated! I don't have much money after leaving my job and it is a choice between shutting the server or selling the domain or paying a lot of money just so I can show this material.

Material like the FSB Bombings that put Putin in power or the Google no 1 spot when you search for protecting yourself from UK Police with "how to give a no comment interview". If you see any adverts that interest you then please visit them as it helps me without you even needing to give me any money. A few clicks per visit is all it takes to help keep the servers running and tag any tweets with alternative news from the mainstream with the #altnews hashtag I created to keep it alive!

However if you don't want to use the very obvious and cost free ways (to you) to help the site and keep me writing for it then please consider making a small donation. Especially if you have a few quid sitting in your PayPal account doing nothing useful. Why not do a monthly subscription for less money instead. Will you really notice £5 a month?