Mobile-First Indexing

Mobile-first indexing means Google predominantly uses the mobile version of a site’s content for indexing and ranking. Since most users access the web via mobile devices, Googlebot now crawls with a smartphone agent by default. This makes mobile optimization essential: ensure content, structured data, and internal links are consistent across desktop and mobile. Avoid hiding key content behind 'Read More' buttons on mobile or serving different content to mobile users. Test your site using Google’s Mobile-Friendly Test. Sites not optimized for mobile may suffer in rankings, even on desktop searches.