At the end, you'll see which page loaded faster on average.
Load multiple pages, one after another. The side that
finishes fastest wins!
Left side URLs
Right side URLs
In the box below is a sharing link for each matchup you've tried.
Beneath the link is the data for that matchup in CSV format.
Pages compete head-to-head
in your browser to see who's fastest!
Try one of these epic matchups to get started:
It looks like one of the websites you're trying to load
does not want their content to be displayed inside an
iframe, and is actively trying to bust itself out.
Because of this, it's going to be hard to get
an accurate comparison.
Please either speak to the authors of the website or try
a different matchup.
Copy this URL to share this test with someone else:
See why these pages are fast or slow using
GTmetrix, a free service that examines
your site and gives recommendations for how to make it faster.
...or you can run the tests yourself on Firefox by installing
Yahoo!'s YSlow or Google's
Page Speed tools.
More goodies
webpagetest.org is a community tool
for testing and comparing sites using donated locations across the world. You
can even create a video of multiple sites loading side-by-side.
showslow.com lets you share and compare
YSlow and
Page Speed results and
even schedule automated tests of your own site.
Page Loading Mode
Select serial mode to load one side at a time to eliminate the possibility that the two sides will interfere with each other.
Why?
whichloadsfaster is a fun way to spread the word that
web performance
matters.
It's about friendly competition and about testing in
everybody's browser, not just ones that have
nice performance tools already.
How?
whichloadsfaster is
open source,
written in HTML and JavaScript and runs entirely on
the client-side. You can host the files on your own site
and tweak them to suit your own nefarious plans.
We promise not to tell.
Who?
whichloadsfaster was conceived and written by
Ryan Witt and supported by his employer,
FastSoft Inc.
Questions, bug reports and ideas happen on the
mailing list.
webpagetest.org is a community tool
for testing and comparing sites using donated locations across the world. You
can even create a video of multiple sites loading side-by-side.
showslow.com lets you share and compare
YSlow and
Page Speed results and
even schedule automated tests of your own site.
