A handful of Firefox tweaks that will double your browser speed

by Carlos Dagorret on March 25, 2009

Firefox users take note: You need to do this. Now. As in, this instant. More savvy users are probably already familiar with editing Firefox’s configuration file but whether you’re a computer rookie or a seasoned veteran, Gnoted has issued a handful of tweaks that really get Firefox cooking. As much as we all love the fox, it can get a bit slow on occasion – especially if you’re like us and have 35 open tabs spread across four windows at any given time. By tweaking the way Firefox handles some caching functions, you can dramatically improve page load speed and even prevent Firefox from hogging your system resources while minimized. If you don’t currently have any experience playing with your configuration file, don’t be scared. Just follow the simple instructions, take your time and if you want a security blanket to squeeze, jot down each setting before you change it so you can always restore the default configuration if need be. So without further ado, hit the jump and get tweaking – just remember to restart Firefox when you’re done.

Reduce the amount of RAM Firefox uses for its cache feature

1. Type “about:config” (no quotes) in the adress bar in the browser.
2. Find “browser.sessionhistory.max_total_viewer
3. Set it’s value to “0“;(Zero)

Increase the Speed at Which Firefox loads pages

1. Type “about:config” into the address bar and hit Enter.
(Normally the browser will make one request to a web page at a time. When you enable pipelining it will make several at once, which really speeds up page loading.)

2. Alter the entries as follows:
Set “network.http.pipelining” to “true
Set “network.http.proxy.pipelining” to “true
Set “network.http.pipelining.maxrequests” to some number like 10.

This means it will make 10 requests at once.

3. Lastly, right-click anywhere and select New-> Integer. Name it “nglayout.initialpaint.delay” and set its value to “0“;.(Zero)

This value is the amount of time the browser waits before it acts on information it receives. If you’re using a broadband connection you’ll load pages faster now.
Optionally (for even faster web browsing) here are some more options for your about:config (you might have to create some of these entries by Right Click –> New– > Interger or String

network.dns.disableIPv6: set “false”
content.notify.backoffcount”: set “5“; (Five)
plugin.expose_full_path”: set “true”.
ui.submenuDelay”: set “0; (zero)

Reduce RAM usage to 10MB when Firefox is minimized:

This little hack will drop Firefox’s RAM usage down to 10 Mb when minimized:

1. Open Firefox and go to the Address Bar. Type in about:config and then press Enter.
2. Right Click in the page and select New -> Boolean.
3. In the box that pops up enter “config.trim_on_minimize”. Press Enter.
4. Now select True and then press Enter.
5. Restart Firefox.

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  • Muhammed
    to make firefox much faster than chrome type about:config in the address bar.When about:config opens there will be a long list of entries with a filter on top.Type content.interrupt.parsing in the filter bar double click the entry or select it and press enter.When the entry becomes from true to false then type content.notify interval in the filter and change it to any number between 10000 and 50000 after that type content.max.tokenizing.time in the filter and change the amount to three times the amount of content.notify.interval lastly change content.switch.threshold to a number between ten and fifty thousand lastly right click on any entry select new integer and create content.notify.backoffcount and set the integer to -1
  • Ridhima B
    Awesome! Thank you so much I really needed this...
  • ben
    Did not help, made firefox laggy for me.
  • geedub
    thank you --- these made the FOX fly!!!
  • I did them all soon as I saw this post. I'm about to restart Firefox and see the difference in performance. Thanks for the tips! Goodbye Lunascape!
  • Anonymous
    Thanks a bunch. helped a lot! :D
  • Dick Balls
    Worked like a charm!
  • Alexander Jenkins
    Very nice!

    thanks for your efforts and info.
  • mrgames2
    Awesome!
  • jimmy
    it load up so much faster now thanks so much
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