How To Speed Up Firefox 3


Many people have updated to Firefox 3 since the Download Day 2008, which went so good actually, placing Firefox into the World Guinness Records.

speedometer0100_ffx
Photo Credit: Gary Tamin - Edited by Nicolo’ Canali De Rossi

You have may noticed many changes from the previous version, specially the address bar, and many people have asked me if the old tricks to speed your browser up are still working.

The answer is yes, and here you can find the most common tricks that are used by many people:

  1. Open Firefox, and type about:config in the address bar. Don’t worry about the warning that comes out.

    about-config_warning

  2. Use the filter above to find network.http.pipelining and set it to True by double clicking on it.
  3. Create a new boolean value named network.http.pipelining.firstrequest and set that to True, as well.
  4. Find network.http.pipelining.maxrequests, double click on it, and change its value to 8.
  5. Now look for network.http.proxy.pipelining and again set it to True.
  6. Create two new integers named nglayout.initialpaint.delay and content.notify.interval, setting them to 0.
  7. Now restart your browser and check a few heavy-loading websites to see if those changes worked or not.

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17 Comments

  1. Frank
    Posted July 8, 2008 at 1:14 pm | Permalink

    These items don’t appear in my about:config

    network.http.pipelining.firstrequest
    nglayout.initialpaint.delay
    content.notify.interval
    content.switch.threshold
    content.interrupt.parsing

    Do I just add them ?

  2. Posted July 8, 2008 at 3:10 pm | Permalink

    The only two of those that I could find in my about:config were network.http.pipelining and network.http.pipelining.maxrequests.

  3. Peter
    Posted July 8, 2008 at 6:57 pm | Permalink

    content.switch.threshold is an integer. How do you set it to True?

  4. admin
    Posted July 12, 2008 at 12:48 pm | Permalink

    Hey guys, I have checked your comments and updated the list.

    If you create/change new values that really make improvements please let me know so that I can add them. Now I have tried all the ones listed and they all do their job on a 4Mbps line.

  5. franktheman
    Posted September 4, 2008 at 12:45 am | Permalink

    I had really slow firefox last few weeks… this speeded it up! Thanks for this :D

  6. Michael
    Posted September 15, 2008 at 4:01 am | Permalink

    How will this work with using a dialup connection? Thanks.

  7. Muneeb
    Posted September 26, 2008 at 3:00 am | Permalink

    This is really amazing, Thanks for the helpful post. At first when i was searching for it on firefox add-ons area i was disappointed about how to find something which can make my firefox faster, but now i’m happy - Thanks once again for the great help.

    -Muneeb

  8. Posted October 14, 2008 at 9:10 pm | Permalink

    Hey guys thanks for the tips! I thought the parameter of about:config only works on firefox2 and older version but the show is still goes on! Someone told me about a new browser but its not Google Chrome, its called Maxthon, you can check at http://maxthon.com . they said it is the fastest browser on the net. can someone share us the magic in the box? thanks a lot. hope you guys can comment on my blog if you guys have the secret. have a nice day

  9. robby
    Posted October 15, 2008 at 7:15 am | Permalink

    i think he got these tweaks from http://www.helpero.com. under “how to” tab page 17.if its not in page 17, then try the other pages.you’ll find more firefox tweaks there, just like this one.^^

  10. Leo
    Posted November 16, 2008 at 6:33 pm | Permalink

    Perfect!! thanks for the tips

  11. Steven
    Posted January 17, 2009 at 1:03 am | Permalink

    Thanks.. It doesn’t make it blindingly fast, but I do notice a difference. one question though, Is it normal for firefox’s cpu to be at 100 when loading pages?

  12. Posted February 10, 2009 at 10:07 pm | Permalink

    How do you get it back to normal afterwards?

  13. david
    Posted March 14, 2009 at 5:00 am | Permalink

    how do you “create a new boolean value”?

  14. Posted March 30, 2009 at 9:55 pm | Permalink

    those configs ruined my firefox..now i have the error ” Scripts is running with a bad behavior” =(

  15. bounmy
    Posted April 1, 2009 at 7:40 am | Permalink

    These instructions are not very descriptive. Maybe you should try to explain it a bit more.

  16. M
    Posted April 7, 2009 at 11:07 pm | Permalink

    help please!! I tried part of this tweak and it made firefox slower and whilst trying to delete nglayout.initialpaint.delay it’s changed it to a ’string’ instead of an integer. is this bad???
    I really want to get it back to how it was. I have already had to have an HD replaced and can’t afford to do it again and am slightly scared.
    On the other hand i really want to speed firefox up especially on initial start up as it’s painful. I want to avoid unistalling and reinatallin as i have so much save in my bookmarks etc
    Please can someone help me?
    many thanks
    M

  17. M
    Posted April 7, 2009 at 11:52 pm | Permalink

    apologies had to correct my own spelling in the last message it should read ‘want to avoid uninstalling and REINSTALLING’ and ‘as i have so much SAVED in my bookmarks’!!
    I was in a bit of a panic and rush to get some assistance!!
    M

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