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Google Splits Its Search Index and Puts Mobile Above Desktop.
Non mobile optimized websites will suffer!


We know that Google has been streamlining its mobile capabilities over the past year. On October 13, the company announced that it will be separating its index of search results for mobile and desktop, with mobile as the primary index.

The news came from webmaster trends analyst Gary Illyes at Pubcon in October, who said that the change will happen within “months”, although no exact date was given. With the mobile index as the primary and rapidly updated index, the desktop index will remain active but not as frequently updated.

Now, why is mobile index the primary index?

Only 14% of people use laptops or desktop computers exclusively, versus the 27% of people who use smartphones exclusively, with about 57% of people use both. The stats say it all.

Desktop and Mobile Users

Many felt that the change was a foregone progress. Google’s ongoing effort to prioritize mobile is no secret, and this split simply reinforces that cause. The goal is to improve the mobile experience for searchers, as more people rely on their smartphones for most, if not all, of their online searches.

The goal is to improve the mobile experience for searchers, as more people rely on their smartphones for most, if not all, of their online searches.

With separate versions of index, mobile users will get one set of search results and desktop users will get another set of search results. It allows Googlebot to strictly crawl the mobile/responsive version of a web page and index it accordingly.

The change can result in Google serving more mobile-optimized content to people searching on their smartphones and tablets. With accelerated indexing, the search engine can deliver breaking headlines to people faster and easier than ever before.

The first hint of change came out when Google said it was experimenting with the new search index last year. With Illyes’ recent announcement at Pubcon, it looks like Google’s finally moving ahead with the idea.

Google in the Mobile-First Approach

With more searches happening on mobile than on desktop, Google has every reason to prioritize mobile search. But just how serious is Google in its mobile-first approach? Here are three important highlights within the last two years:

The Mobile-friendly Label

As early as 2014, they introduced the “mobile-friendly” label for mobile search results. The objective was to help mobile users identify websites that were optimized for mobile and offered a better browsing experience.


Source: Google Webmaster Central Blog

Google cited the following criteria for mobile-friendly websites:

  • Avoids software, like Flash, that can slow down pages
  • Looks good on small screens
  • Places links far apart enough so tapping is easier
  • Uses bigger text so there’s no need to zoom

Last August, Google removed this label to de-clutter mobile search results. But, this doesn’t mean Google is bidding goodbye to its mobile ranking signal – it’s still there.


All the buzz about mobile eventually came to what many of us know all too well – Google’s mobile-friendly update – or Mobilegeddon. The goal was to increase the rankings for mobile-optimized pages and pull down pages that weren’t.

Almost half of mobile-unfriendly pages dipped in the results page.

Within the first two months of implementation, sites that failed to mobile-optimize experienced a 12% decrease in traffic. Almost half of mobile-unfriendly pages dipped in the results page. Mobile-optimized sites, on the other hand, gained 32% more traffic for organic searches.

Accelerated Mobile Pages (AMP)

Speed is a chief concern in the topic of “mobile-friendliness”. About 73% of mobile users cite slow loading time as the biggest problem in mobile search, giving a window time of 10 seconds before leaving the page.

Google also said that 53% of users leave a page if it doesn’t load within 3 seconds. This gave way to efforts to revolutionize the performance of mobile web, as well as help users identify faster-loading pages ﹘ the Accelerated Mobile Pages (AMP). According to Google, using the AMP HTML framework can increase the page’s speed by 15 to 85%.

Finally, the announcement of the upcoming division of Google’s search index search sends a clear message: mobile search is more important than desktop search.

What This Means for Website Owners

The demand for mobile-friendly pages, and Google’s proactive measures to offer them to users, affect your clients more than you think.

Consider this: 57% of users won’t recommend a business’ website with a poor mobile experience, and 40% admit to moving to a competitor site after such an experience. That’s how easy it is to drive away sales nowadays: by having a website that doesn’t satisfy the mobile user.

If businesses can’t reach their target market through mobile search or offer the experience users expect, they’re losing potential customers to competitors who can.

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