Mobile-Friendly Websites Tools
https://developers.google.com/webmasters/mobile-sites/

Make your site look great on mobile devices. Whether you’re a beginner or an expert, you can find an array of information to make a great site for your mobile visitors. Features include: a) Take the Mobile-Friendly Test and fix potential issues with your site; b) Update a site that uses a CMS like WordPress or Joomla with our guide; and c) Avoid common mistakes and make sure your site is indexed by Google. This will be added to the tools section of Research Resources Subject Tracer™ Information Blog. This will be added to Entrepreneurial Resources Subject Tracer™.