Check a Web page for mobile-friendliness

Validate by URI

Validate by File Upload

Note: mobileOK tests cannot all be run when file upload is used. In particular, checks at the HTTP level and tests that apply on resources linked from the HTML document cannot be run. Also note that file upload may not work with Internet Explorer on some versions of Windows XP Service Pack 2, see our information page on the W3C QA Website.

Validate by direct input

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Note: mobileOK tests cannot all be run when direct input is used. In particular, checks at the HTTP level and tests that apply on resources linked from the HTML document cannot be run.

This checker performs various tests on a Web Page to determine its level of mobile-friendliness. The tests are defined in the mobileOK Basic Tests 1.0 specification. A Web Page is mobileOK when it passes all the tests. Please refer to the About page for more details. If you wish to validate specific content such as markup validitation, or RSS/Atom feeds, or CSS stylesheets, or to find broken links, there are other validators and tools available.

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