Please insert the address of the page you would like to assess. The results will show whether the page conforms with HTML and whether Qualidator HTML warnings and hints have been found.

Help & FAQs

What does the Qualidator Singlepage Analyzer test/assess?

Firstly, the HTML source text of the URL provided is validated. In other words, the syntax of the HTML used is assessed. Typical errors are speech marks that have been omitted, tags that have been left open or not used properly, attributes or values that are not permitted, etc.

The source text is then assessed for its style, i.e. it is 'qualidated'. A valid site (see paragraph above) is still not a good quality site. For instance, definitions of style should be found in the stylesheets, and not directly in die HTML page. Another example is the title structure, which can have an impact on usability but still return a valid page. Many similar tests are carried out in this second step. By clicking on the error displayed, you will land on the specific point in the source text; a further click then takes you to the explanation.

How many pages are analysed?
Only 1 page is analysed. Insert the direct URL of the web page you would like to analyse.
Would you like to assess a whole web site?
The Qualidator®SiteAnalyzer“ allows to clearly identify weak spots, by using color-codes in HTML and CSS source text in up to thousands of pages in one go.

Where can I get help? Where can I submit suggestions for improvements?
Please use our support form on

Qualidator News & Hints

Qualidator SiteAnalyzer has achieved "Windows 8 App Certification" (Feb 2014)
HTML5 Validator for SiteAnalyzer
When upgrading to HTML 5 SiteAnalyzer helps you validating all pages of your website for issues.
More infos and download
HTTP Compression Test

HTTP Compression of HTML, JavaScript and CSS can now be tested directly in SiteAnalyzer. Different User Agents are available in order to test the proper behavior.
Qualidator for SmartPhones has been optimized for the iPhone and other SmartPhones in the last few month. Check it out. Feedback welcome.
Do you already know the Qualidator® SiteAnalyzer?
The Qualidator® SiteAnalyzer is a Windows application, developed to allow a one step, page by page, automated validation of an entire web project (XHTML & CSS), and to review the quality by carrying out over 30 additional tests.

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