Measuring Browser Support for HTML5


HTML5 is the current standard for content displayed in web browsers. Your ordinary web browsing depend on how well the browser you use supports this standard. In addition, some applications have web-based versions that use features of HTML5 to provide a solution that does not require the installation of any code, so that you can use the application on a computer that you are just using temporarily, such as a computer in a library or Internet café.  Parallels Access and Parallels Remote Application Server are two examples of such applications. See Figure 1.


Figure 1_Using the HTML5 version of Parallels Access to connect to a remote computer

Fortunately, there is an easy way to measure browser compliance with the HTML5 standard. The site HTML5 Test performs a comprehensive test of any browser and gives that browser a score from 0 to 555, measuring its HTML5 implementation. The higher the score, the better the browser supports HTML5.

A Mac user who has Parallels Desktop has a wide range of browsers to choose from. With HTML5 Test, I was quickly able to measure seven different browsers.

All my tests were run on a Retina MacBook Pro (Mid-2012 model). The host OS was macOS Sierra 10.12.1. The Windows guest OS was 64-bit Windows 10 Pro (build 14393), running in Parallels Desktop 12.1.3 (build 41532). The browsers used were the latest customer versions available, and the version number details follow all the tables.

Tables 1 through 3 show the results of my tests. The same numerical data is shown in each table, but the tables are sorted differently so that you can easily answer questions like:

Which Mac browser scored best? Which scored worst? Do the Mac and Windows versions of the same browsers have different scores? and Which browser scored the best overall?


Table 1_HTML5 Test results, sorted by score


Table 2_HTML5 Test results, sorted by OS


Table 3_HTML5 Test results, sorted by Browser


I hope these scores help you to decide if you should change your default browser. If you use a browser I didn’t test, please run the test and post the score in a comment to this post.

The browser versions tested were:

  • Edge 14 on Windows 10
  •  IE 11.0 on Windows 10
  •  Chrome Dev 56.0.2924.87 on Windows 10
  •  Firefox 51.0 on Windows 10
  •  Safari 10.0.1 on macOS Sierra 10.12.1
  •  Firefox 51.0 on macOS Sierra 10.12.1
  •  Chrome Dev 56.0.2924.87 on macOS Sierra 10.12.1

Try Parallels Desktop for free for 14 days and test all !

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Kurt has been a Mac developer since before the Mac came out. Today he is the Senior Product Manager at Parallels where he works on both Parallels Desktop for Mac and Parallels Access. Prior to Parallels, he was the Senior Mac Evangelist in the Macintosh Business Unit (MacBU) at Microsoft Corp. Kurt is the author of three books and has lectured internationally on object-oriented programming, UI design, and virtualization. Kurt is also a Microsoft Office for Mac and iOS Accredited Support Professional for 2014 and 2015. Outside of work, Kurt has been a fencer for many years, has four times been a member of the US team at the world championships, and has also been the coach of the US team:

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