W3C Web Browser Performance Assessment Tools & Link Data

RECOMMENDED: Click here to fix Windows errors and optimize system performance

As a member of the W3C HTML working group, this test also awards points for support for related designs and specifications.

The HTML 5 test is updated each time the specification is updated. If certain functions are deleted, they are also deleted from the test and new tests are created. The maximum score a browser can get is 555

Acid 3

September 2020 Update:

We now recommend using this tool for your error. Additionally, this tool fixes common computer errors, protects you against file loss, malware, hardware failures and optimizes your PC for maximum performance. You can fix your PC problems quickly and prevent others from happening with this software:

  • Step 1 : Download PC Repair & Optimizer Tool (Windows 10, 8, 7, XP, Vista – Microsoft Gold Certified).
  • Step 2 : Click “Start Scan” to find Windows registry issues that could be causing PC problems.
  • Step 3 : Click “Repair All” to fix all issues.


Acid3 test is a browser benchmarking application developed by The Web Standards Project. The benchmark tests the compliance of the web browser with DOM (Document Object Model), JavaScript and various other web standards. The typical identification of acid 3 is the result displayed after the test.

The other results are displayed as a progressively increasing counter, represented by colored rectangles. Each rectangle indicates the end of a particular test. Finally, when all tests are performed, the graph shows the result 100/100 ; of course, if all goes well.

Browser mark

Browser mark 2.1 is the next and improved version of the browser benchmark of the same name. This benchmarking application is developed by Rightware, a Finnish software development company. The application focuses on actual performance measurement for different test groups such as CSS, DOM, graphics, JavaScript and JavaScript frameworks.

Browsermark 2.1 tests browser compliance by indicating how the browser has worked on CSS3 and in HTML5 support tests. It tests other factors such as the ability to resize the screen, the ability to load pages, the ability to support modern web site development techniques and the overall performance of the browser.


SunSpider is also a popular JavaScript benchmarking application. However, SunSpider only tests the basic JavaScript language, not DOM or other browser APIs. This is because it was built to compare different browsers and different versions of the same browser. SunSpider performs field testing that focuses on the problems developers face when working with JavaScript.

Browser performance may vary depending on the reference test tool, as it depends not only on the operating system but also on the hardware plug-ins.

Other free online browser speed tests

  • Speed-Battle is a free online browser speed test
  • JetStream is a JavaScript benchmarking suite that focuses on the most advanced web applications.
  • Dromaeo is Mozilla JavaScript performance test suite.

Test your browser today and let us know which browser reference test you chose and how it stood up to the competition.

PC Stress Test Freeware and these free online firewall tests may also interest you.

RECOMMENDED: Click here to troubleshoot Windows errors and optimize system performance