Will google start penalizing non mobile friendly sites?

Google announced that they’ll start tagging sites that are mobile friendly. This could affect the SEO rankings in the future.

This change will be rolling out globally over the next few weeks. A page is eligible for the “mobile-friendly” label if it meets the following criteria as detected by Googlebot:

  • Avoids software that is not common on mobile devices, like Flash
  • Uses text that is readable without zooming
  • Sizes content to the screen so users don’t have to scroll horizontally or zoom
  • Places links far enough apart so that the correct one can be easily tapped

If you want to make sure that your page meets the mobile-friendly criteria:

  • Check your pages with the Mobile-Friendly Test
  • Read our updated documentation on our Webmasters Mobile Guide on how to create and improve your mobile site
  • See the Mobile usability report in Google Webmaster Tools, which highlights major mobile usability issues across your entire site, not just one page
  • Check our how-to guide for third-party software like WordPress or Joomla, in order to migrate your website hosted on a CMS (Content Management System) to use a mobile-friendly template

I’ve felt for a while that google favored mobile friendly sites, even if they’ve never officially announced it.