Firefox · December 14, 2006 0

Firefox 3.0 passes the Acid 2 Test (finally)

With the much awaited official release of Firefox 3.0 Alpha our favourite browser has finally managed to pass the Acid 2 Test. Codenamed Grand Paradiso, starting from this version Firefox implements the Gecko 1.9 rendering engine and boasts heavily refactored reflow algorithms that improve Firefox layout functionality and resolve some long-standing CSS bugs.

Ryan Paul at arstechnica has provided us with an great insight into these improvements…

The reflow improvements in Gecko 1.9 (included in the latest Gran Paradiso nightly build, but not the alpha release) finally enable Firefox to pass the Acid 2 test, a CSS test case developed by the Web Standards Project to illuminate flaws in HTML/CSS rendering engines. To pass the Acid 2 test, browsers must comply with W3C standards and provide support for a wide variety of features that are considered relevant by Web designers. The Acid 2 test has been passed by several other browsers, including Safari, Konqueror, and Opera, but not Internet Explorer. Passing Acid 2 is considered to be a significant milestone in Firefox development.

Gecko 1.9 also includes a new threading model, support for Cocoa widgets on OS X, and some unit fixes (still under development) that could eventually facilitate a full-page zoom feature like the one found in Opera.

Read the full article