What slows a site down?

[final kaoss]

Like I said, I agree that webpage test is good but there's nothing wrong with gtmetrix either. Also, sure there are other "test sites" as you called them but I don't refer to them either. Gtmetrix & webpage test are the only two that I normally refer people to when they have issues. One of the main reasons I refer gtmetrix is because it helps quite a bit with troubleshooting, if not for that site and it's constant measurements, I wouldn't see pagespeed scores nearly as high as they are now on my sites, such as these scores:
http://gtmetrix.com/reports/www.odys...e.com/A6Hzpz3M
http://gtmetrix.com/reports/www.vide...t.com/dr6Q02hf

Also with gtmetrix you have the choice between firefox & google chrome, with different locations & speeds to pick from, just like with webpagetest.

Originally Posted by Max Taxable

WebPageTest's pedigree is, it is owned and maintained by Google's Tech President, Patrick Meehan. So it's the only one I use - if you test good there you test good anywhere. You have no idea what browser or connection you're testing on with other "test" sites, with Meehan not only do you know, you can test dozens of combinations in browsers, locations, connection speeds, and even mobile testing.

The waterfall chart I posted earlier clearly shows a few of his plugins are really killing his load times. https://vborg.vbsupport.ru/showpost....66&postcount=6