Opera and Webkit pass Acid3 test. Does anyone care?

Martin Brinkmann
Mar 27, 2008
Updated • Dec 9, 2012

Big news all around the Internet that a nightly build of Webkit and an internal build of Opera have passed the Acid 3 test. Users who favor one of the browsers now fight over the right to state that their browser passed it before the other which is in my opinion completely irrelevant.

Who cares which browser was able to pass the test as the first browser ever ? Who actually knows what the Acid 3 test does and what it means if a browser passes it ? Passing that test does not mean that the browser is able to display all websites correctly. Far from that. All that it means is that the browser is able to pass this test, nothing more, nothing less.

Don't get me wrong. It's nice that the browser developers are making an effort to pass the test but guys, it's just a test. The developers have a right to be proud of it but the users ? If you want to test your browser just visit the official Acid 3 website.

Update: The majority of modern browsers now pass the recently modified Acid3 test. Microsoft's Internet Explorer, Google's Chrome, Mozilla's Firefox and Opera all pass the Acid3 test with a perfect score.

Here is Opera's Acid3 test result as of today. The test has been run with Opera 11.60.

The Acid3 test in its current form is no longer a distinguishing factor. It basically has been replaced by other tests, for instance the HTMl5 test, various JavaScript and general browser benchmarks.

Considering that HTML5 is not that widely used on today's Internet, it is fair to say that the new browser test tells users more about a browser's future compatibility than current one.


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  1. Tobey said on March 31, 2008 at 12:00 pm


    Besides, there’s a way to make even incorrectly coded websites display properly in Opera which may be sometimes helpful. I wrote an article on this some time ago, please follow the link below if you’re interested.


  2. Martin said on March 30, 2008 at 9:52 pm

    thinker… I’m a webmaster and web developer, and I use Opera all day long, I don’t have problem with gmail, live, msn, yahoo, google, and any website, I do my banking with Opera, check my emails, post into my blogs, etc.

    You should really try Opera for a month… Opera works better than FF.

  3. Tobey said on March 30, 2008 at 12:56 pm

    Heh, sorry but I can’t resist replying to Thinker’s post:

    Have you thought of the possibility that it’s not Opera what “sucks” but rather the websites themselves which are unable to comply with the standards?

    I understand an average user wants to have their website displayed correctly at all times but wrongly coded websites don’t make Opera or any other standard compilant browser a “sucker”. Rather the opposite.

  4. Thinker said on March 30, 2008 at 11:57 am

    It’s pointless. Opera still sucks with displaying normal pages, and I don’t care about acid3, I want gmail and live.com working properly!

  5. Ace_NoOne said on March 28, 2008 at 5:22 pm

    Just for the record, and without getting into a browser war, I’m a happy Firefox user myself.
    Nevertheless, I acknowledge that the Opera and WebKit teams are doing a better job in terms of standards compliance (so far at least… ).

  6. Martin said on March 28, 2008 at 5:12 pm

    As Ace_NoOne said… you are missing the point…, but thats because you are a poor firefox user, so if other browser do the thing right and better than chotofox :P it’s normal to see ff users getting “angry”…

    Sorry, but Acid3 test it’s really really important for the future of the web and the web developers/designers.

  7. Tobey said on March 28, 2008 at 4:48 pm

    I must agree with both comments since web standard compilance is probably the most important aspect of webdesign. Passing one test surely isn’t such a big deal but from the global point of view, it shows which browser is capable without faults of displaying correctly coded websites.

    Opera has once again proved its well-known compilance. I think I can speak for all of us when I say WE ARE FED UP WITH HACKS, especially when speaking of Internet Exploder ones.

    We need standard compilance, whether we enjoy having to comply with it or not.

    Opera FTW :)

  8. PC Podrska said on March 27, 2008 at 11:43 pm

    I think that passing the Acid 3 test is a big thing for a web browser – it is very demanding test that tests implementation of the web standards in the browser engine.
    BTW, you have 7777 RSS subscribers now! ;)
    Check out the pic I made with Jing:

  9. Ace_NoOne said on March 27, 2008 at 11:25 pm

    I’m afraid you’re missing the point.
    It’s good that this is such a big issue, because it encourages browser vendors to implement web standards. Those make it easier (or possible) for developers to design a consistent user experience, which is better for the visitor, which in turn is better for the internet as a whole.
    It’s more complicated than that, of course, but this is what it boils down to.

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