Sites will get label, and might get a search benefit in the future.
Google announced today that it is adding a “mobile-friendly” label to sites in search results, and is experimenting with using mobile-friendliness as a ranking signal.
Over the next few weeks, Google will start adding the “mobile-friendly” identifier next to qualified sites for mobile searches (see picture).
In a blog post about the move, Google suggested that how mobile-friendly a site is might also affect its rankings in the future.
We see these labels as a first step in helping mobile users to have a better mobile web experience. We are also experimenting with using the mobile-friendly criteria as a ranking signal.
It seems intuitive that Google will demote sites in mobile search if they don’t render well on a mobile browser.
You can see if your site is eligible for the mobile-friendly label on this test page.