Throttle Bandwidth of Firefox and IE

Martin Brinkmann
Feb 11, 2008
Updated • Jan 2, 2013

Why would anyone want to throttle the bandwidth of Firefox or Internet Explorer ? That was my first thought when I read about two tiny apps for Firefox and Internet Explorer for the first time at Sizlopedia. I mean, it is normally the other way round. You download some large file or use P2P networks and want to use a browser as well which means that there should be a way to assign a minimum amount of bandwidth for the browser instead of throttling it. Everyone should be capable of not download large files or browsing all those rich entertainment websites if he really needs the bandwidth for something else.

Firefox Throttle and IE Throttle are add-ons for Firefox and Internet Explorer respectively that allow a user to throttle the bandwidth of the browser by selecting maximum values for upload and download. IPs and / or websites can be excluded from this effect which is good if you have a website that you don't want to throttle. Local Area Network IPs are excluded automatically and some presets are available to choose the bandwidth assigned from.

Lastly it provides stats for uploads and downloads of the session as well as total stats since installing / reseting the add-on. The Internet Explorer version comes without stats.

A better but more complicated way of setting up bandwidth limitations would be to configure it on a broader level, say the router for instance which would have the advantage that the user could select all applications that connect to the Internet instead of just Firefox or Internet Explorer.

Guess some users might find this useful nevertheless.

Update: The throttling programs are no longer available, and the developer website returns a not found error. Check out limit the bandwidth of Windows programs for an alternative that lets you throttle the bandwidth of all programs, and not just Firefox or Internet Explorer.


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  1. Estoy Aburrido said on August 9, 2011 at 12:22 am

    Sadly this Throttle no longer works in Firefox 5.0, anyone knows an upgrade?

  2. bean said on June 5, 2011 at 4:33 pm

    If you are developing a website, and need to test Loading bars, preloaders, progress, etc, this is extremely useful to have.
    I am doing that now.

  3. india 365 said on November 14, 2010 at 12:27 pm

    Yes, this is what I’m looking for. I installed it on my browser (IE) and I’m struggling to locate where I can make my settings. It would be great if you can help out.


  4. ER said on February 11, 2008 at 11:23 am

    “Guess some users might find this useful nevertheless.” … When you share a DSL connection with other people and don’t want to cause their $video_web_site video to be stopped because you’re downloading some file… This is VERY useful.

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