Google announced this morning that its "mobile first" indexing of the internet is now rolling after a year and a half of testing and experimenting. Already in 2016, Google has fleshed out its plan to change how the search index works and explains how the algorithms are eventually relocated to use the mobile version of a site's content to index their pages and understand their structure data and to display excerpts from the website in Google search results.
In December 201
Mobile-first indexing means that Google uses the mobile version of a web page for indexing and ranking to help our – mainly mobile – users find what they are looking for. Company writes in a blog post
Google refers to "primary mobile" as the fact that Majority of users using Google Search today have been doing this from mobile devices since 2015.
Google also states that it will have an index for search results, not a mobile-first index, which is separate from its main index. In other words, it will start looking at the mobile web pages to index the web, not the desktop version.
Mobile friendliness has long been one of the many factors in determining how a website is rated, but it is not the only factor. For example, there are times when a non-mobile-friendly page still contains the best information and appears higher, Google says.
However, Google has begun to prioritize mobile sites in a number of ways. For example, in 2015, it began to increase the rank of mobile-optimized web pages in mobile search results, and more recently a signal was added that uses page speed to determine a page's mobile search ranking. As of July 2018, slowly loading content will no longer be assigned.
While Google today claims that mobile-friendly indexing has no direct impact on the ranking of content, it notes that the mobile-friendly content of a website is indexed in this new site. Fashion will likely help keep the site up in mobile search results performs better.
Google is not shifting all the sites to the new mobile first indexing – just the first wave.
Google in particular has selected those sites that already follow best practices for initial mobile indexing. And it will prefer the mobile version of the website via its own fast-loading AMP pages.
The moved pages will be notified through Search Console, Google says, and they'll see more visits from Googlebot. After the move, Google will display the mobile version of the pages on the site in the search results and cached Google pages.
Google tells webmasters about sites that are not yet mobile-friendly, so they do not panic. "If you only have desktop content, you'll still be in our index," the Google announcement assures.
The company did not state when the introduction of the first mobile indexing would be completed.