Microsoft recently introduced a new tool for Bing — a new Mobile Friendliness Test Tool, built for web developers and designers who build responsive websites. The Bing Mobile Friendliness Test Tool looks at several things on a web page which includes viewport control configuration, the width of page content, readability of text on a page, spacing of links and elements on a page, and use of incompatible plug-ins.

The tool is indeed pretty cool, and very useful for web developers. If you want to know more about how Bing determines a page to be mobile friendly, you can read the company’s detailed, technical blog post here.