Web Compatibility Test for Mobile Browsers (often Mobile Acid test [1] ) is a test page published and promoted by the World Wide Web Consortium (W3C) to expose web page rendering flaws in mobile web browsers and other applications that render HTML . It was developed in the spirit of the test by the Web Standards Project . The test uses for some parts JavaScript to test the different technologies. The browser has to be completed 16 different subtest indicated by a 4 X 4 raster of squares.

Overview of standards tested

The mobile Acid test tests a variety of web standards published by the World Wide Web Consortium and the Internet Engineering Task Force . Specifically, the mobile Acid test tests: [2]

  • Subtest 1. CSS 2 min-width
  • Subtest 2. Transparent PNG
  • Subtest 3. gzip support : A method for compression the transferd web page. It is hand of the HTTP 1.1 specification.
  • Subtest 4. HTTPS : A method to broadcast the web page in a secure way.
  • Subtest 5. Cookies support : The web page is able to store data in small text files on the mobile.
  • Subtest 6. iframe including of XHTML-served-as-XML content
  • Subtest 7. XMLHttpRequest
  • Subtest 8. Static SVG (gzipped)
  • Subtest 9. CSS Media Queries
  • Subtest 10. JavaScript framework
  • Subtest 11. Dynamic SVG
  • Subtest 12. IRIs and IDN
  • Subtest 13. DOM ‘mutation’ events
  • Subtest 14. The canvas element
  • Subtest 15. contenteditable
  • Subtest 16. CSS3 selectors

See also

  • Comparison of layout engines


  1. Jump up^ Hazael-Massieux, Dominica (13 March 2008). “Renaming Mobile Acid Test” . World Wide Web Consortium . Retrieved 12 April 2009 .
  2. Jump up^ “Web Compatibility Test for Mobile Browsers” . The World Wide Web Consortium . Retrieved 12 April 2009 .