Opera Surpasses Safari in Acid3, 100% Compatibility

Opera Software announced that it reached 100% on the Acid3 test, surpassing Safari, Firefox and Internet Explorer. Until then, Safari led with 98%, followed by Firefox 3 with 71%, and Internet Explorer stayed behind with a much lower score. With this result, Opera takes the lead in an important metric of web standards compatibility.

Acid3 is a test that verifies how browsers implement standardized features, including DOM, JavaScript, CSS and other fundamental technologies. In practical terms, a high score signals that complex pages have a better chance of rendering correctly and consistently across different environments.

For developers, the gain is direct: fewer compatibility problems, more predictable behavior and greater fidelity to what we define in code. For users, the experience tends to be more uniform and without surprises.

The race for total compatibility has been heating up the competition between browser manufacturers. By scoring 100% on Acid3, Opera reinforces its image of commitment to open standards and positions itself as a solid alternative for testing and daily use. Safari remains strong, Firefox still has room to evolve in this metric and Internet Explorer needs to catch up. Overall, the web wins.