Now there's a nice surprise, Nightly (Firefox-alpha build) actually scores one percent higher than Chrome Canary. I do hope Mozilla catches up in other areas, there needs to be more than one large non-Webkit browser out there to push the web forward.

I don't disagree, but why does there need to be another rendering engine? Webkit do push forward too.

Gecko pushed forward too. Then they stopped, they got large and bulky. Things changes, one day Webkit won't be the ones to be first with the new. Competition fuels this process.

We should have learned this lesson from Internet Explorers dominance in the past.

WebKit isn't the first with the new today. In terms of features Firefox and Chrome (not WebKit generally, specifically Chrome) are pretty much neck and neck. They each have their priorities which reflects which "beats" the other in specific features. Chrome has already released Web RTC and Web Intents, Firefox has already released calc() and (current) IndexedDB.

I think you're referring to Firefox from a couple of years ago, their pace has ramped up since they moved to rolling releases.

Well, I am referring to the image the (slightly techish) public has of Firefox as an outdated, slow competitor to Chrome. As I follow it's development closely, however, I am aware they are getting better again and this I why still use it as my primary browser.

Very nice. One quibble - The warning in the top right is a tiny bit ambiguous, it would read better as:

"Caution: This test checks which CSS3 features the browser recognizes, not whether they are implemented correctly."

Edited, thanks!

I am actually a bit surprised the latest Opera didn't score better than 56%. Oh well, I guess I'd complain about the speed if everything was implemented.

What is it? I loaded it up in Internet Explorer and the page wouldn't render.

If you don't show up to take the exam, it's pretty obvious what your grade will be.

In case you're curious about what it looks like in IE7 (the only browser I'm allowed to have on my work machine):

http://www.listensocial.com/images/css3test.png

Which version?

I loaded the page in IE8 and it's barely readable. Almost nothing shows up. I guess that's the score itself.

Here's Lea Verou's (the creator) blog post about this:

http://lea.verou.me/2012/02/exactly-how-much-css3-does-your-...

Does this check vendor prefixed (-webkit,-moz,...) "features" too?

Yes, as long as their unprefixed equivalent is in a W3C specification.

Hmm, Firefox 9.0.1 scored 0% (with Ghostery installed); Forefox 10 scored 60%. They both still score 95% in the Acid3 test. I'm not uninstalling Ghostery, whatever the score.

Thank you for mentioning Ghostery, they have a Chrome extension too!

Firefox scores 0% with NoScript installed as well.

9.0.1 scored 58%.

I hope they are recording the user agents and versions. That data would be very valuable.

Yup, it's all here: http://www.browserscope.org/browse?category=usertest_agt1YS1...

I'm curious to see how IE10 preview scores in this test, anyone have it handy?

The author's blog post claims this: Chrome Canary, WebKit nightlies, Firefox Nightly: 64% Chrome, IE10PP4: 63%

source: http://lea.verou.me/2012/02/exactly-how-much-css3-does-your-...

Anyone tried IE9 ? I wonder how much it scores.

Chrome 18.0.1025.1 dev scores 63%

1% lower than v16