The Web Standards Project’s Acid3 Test

Updated 29 Nov 2011: A recent update to the Acid3 test removed specific tests for technologies that are in transition. For more information on the update to the test, see Ian Hickson's post.

Below is Internet Explorer 10's Acid3 score, one test some people use to measure a browsers support for a few Web standards. Internet Explorer 9 also scores 100.

Acid 3 Score

Support for SVG Fonts in the web development and font communities has been declining for some time. There’s already been discussion without objection of dropping SVG fonts from the Acid3 test. The community has put forth a proposal in the SVG Working Group to give SVG Fonts optional status.

Instead, developers can use the Web Open Font Format (WOFF, supported in IE since IE9 Platform Preview 3 as well as other browsers) for both HTML and SVG content. It works well in conjunction with the CSS3 Fonts module and has broad support from leading font vendors (e.g. here, “a majority of font makers have already settled on WOFF or services like Typekit as their format of choice”). WOFF fonts are a better long-term solution for many reasons discussed previously.

Similarly, support for SMIL animation of SVG in the web development community is far from strong. The leader of the SVG standardization effort wrote that not supporting SMIL in its current state is probably best “since the SVG WG intends to coordinate with the CSS WG to make some changes to animation and to extend filters.” There’s already work started to reconcile CSS3 animations and SVG. Developers interested in animating SVG can use JavaScript, as the samples in the test drive site do today, with consistent results.