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.

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All you need to do is run the Speed Simulator, select a speed that you want to simulate and change the proxy in your browser to localhost and port 8080. In Firefox you do that in Tools > Options > Advanced > Network and the button Settings. Just hit start in Speed Simulator afterwards and use the browser to navigate to your website. You might be surprised about the time that some users have to wait before they can see it at all.

The difference to websites that do check the loading time of your site simulating various speeds is that you are experiencing the speeds by yourself. 20 seconds does not seem much but if you experience this by yourself you might feel that it is to much.

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