⚠️ Caution: This is an early demo of our test updates for NCSC's 2025 TLS guidelines, to allow you to test against the new guidelines. Some explanation text is still missing, out of date, or in rough draft state. Test evaluations may still change. This URL is an active development environment and has limited availability - it may be down for hours or days.

About the website test

What is tested?

After you enter a domain name of a website, we will test if the website offers support for the modern Internet Standards below.

Test report?

After the test is finished, you are directed to a test report. The report contains an overall percentage score and results per test section and per subtest. For more information see "Explanation of test report".

How to improve?

You can use this test report to improve your website. Usually contacting your web hoster on this will be the best next step. In the communication with your web hoster you can use the permalink (i.e. the URL) of the test report.

Widget

You can integrate the website test into your own website using our widget code.

Test your website