A series of tests from the Web Standards Project to assess the standards support of web browsers. Also includes tests themselves, reference renderings, descriptions of the functions tested.

Generates screenshots of how websites appear at vraious resolutions in several commonly used web browsers.

Provides various tables giving an overview of the features and support for various standards present in a number of different browsers.

Tables comparing support for different feature of HTML, CSS, DOM, and ECMAScript in Internet Explorer, Firefox, and Opera.

Test to determine whether your browsers supports all CSS selectors.

Online tool allowing to verify how websites appear in Microsoft Internet Explorer 5.5, 6 and 7.

Compares the zoom function and its results on all the major browsers.

Screenshots and discussion of the rendering of the Acid 2 test by different versions of various browsers.

Test a browser's support for new HTML 4.0 elements. Includes a table of results for several popular browsers.

Provides detailed studies and suggested work-arounds for various browser incompatibilities relating to modern standards.