Tweaks for Firefox (about:config)

To get the Firefox 3 configuration file type “about:config” at address bar.

Here is List of about:config hacks for Firefox 3

1) Disable Extension Compatibility Checks
extensions.checkCompatibility = False
extensions.checkUpdateSecurity = False

2) 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 # (3,10,12 etc)

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

browser.chrome.site_icons = False

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

network.prefetch-next = False

5) Extend Spell check to forms

layout.spellcheckDefault = 2
Change Value from 1 to 2

6) Disable Blinking Text

browser.blink_allowed = False

7) 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

8 ) Disable Annoying Browser Behavior

dom.disable_window_open_feature.menubar
dom.disable_window_move_resize
dom.disable_window_open_feature.titlebar
dom.disable_window_open_feature.toolbar

Set all of above to value False

9) Disabler Browser Toolbar Tip

browser.chrome.toolbar_tips = False

10) Show More Tabs on Single Firefox Window before Scrolling

browser.tabs.tabMinWidth = 75

Setting lesser value with reduce Tab width

11) Past Copy Content with Middlemouse Click

middlemouse.paste = True

12) Scroll webpage in One Go

mousewheel.withaltkey.action=1

13) 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)

Many of above about:config hacks are available in Older Firefox Version, at the end if some thing goes wrong then feel free to restore your about:config to older setting see the below image of how to restore about:config