Mobile-first indexing is a process that Google uses to determine which version of a website to use for indexing and ranking. It means that Google will use the mobile version of a website as the primary source of information, and the desktop version as a fallback option. This differs from the previous approach, where Google used the desktop version as the primary source of information, and the mobile version as a secondary option.
Google started experimenting with mobile-first indexing in November 2016 and gradually rolled it out to more and more websites over the years. On October 31, 2023, Google announced that it had completed the switch to mobile-first indexing for all websites and that it would stop using its legacy desktop crawler and remove the indexing crawler information from Google Search Console.
Mobile-first indexing matters because it reflects the growing importance of mobile devices and user experience. According to Google, more than half of the global web traffic comes from mobile devices, and users expect fast and easy access to information on any device. Therefore, Google wants to ensure that its search results are relevant and useful for mobile users and that its ranking algorithm is aligned with the mobile web.
Mobile-first indexing also matters because it affects how webmasters and SEOs optimize their websites for Google. If a website has different versions for desktop and mobile, or if the mobile version is not optimized for speed, usability, and content, it may suffer from lower rankings and traffic. Therefore, webmasters and SEOs need to make sure that their websites are mobile-friendly and consistent across devices.
To optimize your website for mobile-first indexing, you need to follow some best practices that Google recommends. Here are some of them:
Mobile-first indexing is a significant milestone for Google and the web industry, as it shows the shift from desktop to mobile as the primary platform for web browsing and searching. It also presents new challenges and opportunities for webmasters and SEOs, who need to adapt their websites to the mobile web and provide the best possible experience for their users. By following the best practices and using the tools that Google provides, you can optimize your website for mobile-first indexing and benefit from the mobile web.