With the ever-increasing number of mobile internet users, webmasters have to make sure that there website is viewable on mobile phones. There a lot of checks and tests before a web page can be called ‘mobile friendly’, including page size, scripting, network, markup language used e.t.c.
To make things easier, World Wide Web Consortium (W3) has launched a Mobile Checker that runs a website through these standard tests to determine if a website is mobile friendly. All you need to do is simply enter the URL of the web page you want to check.
Mobile Checker run around 50 sub-tests and provides a final score out of 100. It also provides you a list of tests that the web page failed and details about each test. For most of the failed tests, related best practice information is also provided for reference.
After you have implemented the recommended changes, you can run a test again to see if your score improved.
W3C Mobile Checker is a great little tool to check your website for mobile friendliness. It is completely free and provides information about the best available industry standards.