Any speed site that'll tell me which script/js/css file slows my site?

[born2run]

Hi I want to know if there is any speed checking website that'll show me which script / css / js file is slowing loading of my file? Any graphic presentation or something to evaluate correctly?

Thanks!

[TorontoBoy]

[tools.pingdom.com...] try pingdom.com, which has a waterfall chart

I've also used [webpagetest.org...] webpagetest.org but could not get it to work just now.

[gtmetrix.com...] gmetrix.com has a waterfall.

[NickMNS]

You can simply use the dev-tools in chrome. It also provides waterfalls and you also have the ability to simulate loading with different network speeds. How accurate a representation of reality the simulation provides is anybody's guess, But the same can be said about the third party websites.