What's measured improves. - Peter Drucker

The mobile Web needs to improve. Tests like the WCT are designed to measure the 'Web compatibility' of the mobile browser. The Acid2 & Acid3 tests offer similar metrics that do not aim to point out Web shortcomings on mobiles, like the WCT does.

The WCT manifesto details tests that the MWTS group openly decided were important for mobile browsers to support. Briefly:

  1. Useful CSS function for smaller screens
  2. Good graphics support is the cornerstone of the Web
  3. Compression saves money on typical mobile data plans
  4. HTTPS has been a problem area on mobile browsers
  5. So too have been cookies
  6. Interesting to know if XHTML is supported for legacy applications
  7. Good to have Web 2.0 AJAX applications working
  8. Scalable Graphics are of special relevance to mobile screens
  9. CSS media queries is how author should adapt content if they require
  10. Inputmode tests for a form feature to enter number easily
  11. Dynamic scalable graphics is also great to have
  12. Test for typical problem area of IDNs
  13. Testing for events
  14. Canvas helps enables games on mobiles
  15. Contenteditable allows in line editing, which might help content generation
  16. Powerful CSS3 selectors allow flexibility for style sheets

Some tests might not be relevant any more that could be removed. And likewise new tests can be added. We are open to suggestions!

Notice how the test indicates with a green square if the test passes. Unlike the Acid2 test, we hope to demonstrate from a mobile browser the quality of the browser. It might pass some tests and fail some others. The tests have been ordered relatively in order of difficulty, though it is fair to say: the more green squares the better.

Unfortunately since many mobile browser Javascript engines are fairly limited we have not currently added a percentage counter like Acid3. However please count the squares to see how well your device does.

For example my current mobile phone, the:

Mozilla/5.0 (Linux; U; Android 1.0; en-gb; dream) AppleWebKit/525.10+ (KHTML, like Gecko) Version/3.0.4 Mobile Safari/523.12.2"

T-mobile G1 scores 9/16 on version 1.42 of the test. Do ensure you have the UA string, version of the test alongside your score please.

Unfortunately there are many more mobiles that can't even reach the WCT in order measure how well it performs on the Web! So just by visiting the WCT http://xrl.us/bmqox you are on the right path to improving the Web.

Share the score, UA string and test version and together lets improve the mobile Web!


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