About:Config Firefox hacks (tweaks)

http://infomatica.files.wordpress.com/2008/02/firefox_banner.jpgFirefox about:config command is the core configuration file of Firefox. By editing about:config file we can tweak and edit almost all the settings. User can access to almost all setting of firefox from about:config . You can access to it by putting about:config at address bar of firefox. Here are the tweaks for firefox that will maximize your browsing experience.

  • Location Bar (Set number Auto Complete URL at Address Bar)

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 = #

Enter Number at # (3,6,10 etc)

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

browser.chrome.site_icons = False

  • Disable Prefetch (Helpful for frequent Google searcher, low-speed internet connection or low RAM)

network.prefetch-next = False

  • Extend Spell check to forms

layout.spellcheckDefault = 2
Change Value from 1 to 2

  • Disable Blinking Text

browser.blink_allowed = False

  • Speed Tweaks

network.http.pipelining false to true
network.http.pipelining.maxrequests 30 to 8
network.http.max-connections 30 to 96
network.http.max-connections-per-server 15 to 32
network.http.max-persistent-connections-per-server 6 to 8
network.http.pipelining.ssl false to true
network.http.proxy.pipelining false to true

  • Remove Tab Close Button from all Tab and set A single Close Button at Right

browser.tabs.closeButtons = 3

Single Close Button to control all Firefox Opened Tabs.

  • Disable Browser Toolbar Tip

browser.chrome.toolbar_tips = False

  • Show More Tabs on Single Firefox Window before Scrolling

browser.tabs.tabMinWidth = 75

Setting lesser value with reduce Tab width

  • Disable Delay Time While Installing Firefox Add-on

security.dialog_enable_delay = 0

(Zero is number of seconds Firefox should wait while installing Add-on)

  • Open Firefox Default Search Bar Result in New Tab


  • Auto Complete URL while You type at address Bar


Many of above about:config hacks are available in Older Firefox Version and may be available in new version , if some thing goes wrong then feel free to restore your about:config to older setting ( Right Click on the setting you have modified and choose “Reset”.


Nepallica was started by Pritush and regularly updates this blog, beside Nepallica he also contributes to Nepalunderground.com. Connect with on Google+

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NepallicaRajesh Recent comment authors
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Nice tricks thank you,



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