1=Open a new tab. Type "about:config" without quotes into the address bar and hit enter/click Go.
2=browser.search.openintab = True
Automatically open new search results in a new tab
3= Disable antivirus scanning
browser.download.manager.scanWhenDone: Change this to false.
4=: Auto export bookmarks
browser.bookmarks.autoExportHTML: Change this to true.
5=Open Javascript popups as tabs
browser.link.open_newwindow.restriction: Change this to 0.
6=Turn Off 4-second Countdown in Extension Installations
type security.dialog_enable_delay Change it to 0 (zero)
7=.Disabling the previous pages storing option
Now you will find browser.sessionhistory.max_total_viewers and you will see its default value as -1,change it to 0.
8=Type "about:config" into the address bar and hit return.
9= content.notify.interval(New > Integer)
=500000
10=Look for “network.http.pipelining”. If it’s false, double-click that line and change it to true.
11=Set "network.http.proxy.pipelining" to true by double-clicking it.
12=Set "network.http.pipelining.maxrequests" to 10 by double-clicking it. This means it will make 10requests at once. There is no point setting it higher then 10as it is capped at 10 max..
13=look for network.dns.disableIPv6 and : true: this
14=look for browser.display.show_image_placeholders and :false: this
15=look for browser.tabs.animate and false this
19=Right click anywhere on the Configuration screen and select "New" and then "Boolean".
Enter browser.turbo.enabled as the new Boolean name and click "Ok". Now set the value of the Boolean to true.
after this
restart your firefox and feel the speed faster than a speeding bullet…