I have a fast server, and a reasonably fast home Internet connection. How can I simulate my page loading on a slow connection?

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Great question, I really want to know the answer too :) – DisgruntledGoat Jul 14 '10 at 23:40
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How about running BitTorrent at the same time :¬) – pelms Jul 15 '10 at 12:29
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4 Answers

up vote 11 down vote accepted

FireFox Throttle is a FireFox extension that should do it. Sloppy is a proxy which slows down your connection so it should work across browsers.

Source: http://www.devcurry.com/2010/07/simulate-slow-internet-connections.html

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Fiddler Web Debugger is an excellent HTTP proxy debugging tool for Windows that includes a modem speed simulation feature. Fiddler is freeware.

I also like Charles Web Debugging Proxy, a similar tool. Charles can also throttle the connection speed. Charles is commercial software, but has a free trial available. What I like most about Charles is that it is cross-platform: Being Java-based, it can run on Windows, Mac OS X, and Linux. (You didn't mention which platform you're on, but it's probably one of those :-)

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Try out http://www.webpagetest.org/test. You can run a test from any of their remote servers around the world and see how fast you page loads from those location. It will even let you use a dial-up speed or other slow speeds for most locations.

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I tried this. Works very well. – txwikinger Jul 15 '10 at 5:00
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A quick & dirty solution is to upload a large file to try to choke your outbound bandwidth, this should slow down your inbound connection, and is usually easier than trying to similarly choke inbound bandwidth.

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