“Mobile-friendly” used to be the bar. It’s not anymore — Google indexes and ranks based primarily on the mobile version of your site, which changes what actually matters.
Mobile-friendly vs. mobile-first, the real difference
“Mobile-friendly” means a site is usable on a phone — text doesn’t overflow, buttons are tappable. “Mobile-first” means the mobile version is treated as the primary experience, with desktop as the enhancement, not the other way around. Search engines evaluate the mobile version first, by default.
Where sites quietly fail this
- Content that’s hidden or trimmed on mobile but present on desktop
- Tap targets (buttons, links) too small or close together
- Pop-ups that cover the whole screen on a phone with no easy close button
- Text that requires zooming to read comfortably
The simplest test
Open your own site on your phone and try to actually do the thing a customer would do — find your hours, fill out a contact form, browse a product. If it’s frustrating for you, it’s frustrating for them, and likely working against you in search results too.
This is one of those things that’s easy to fix once you notice it, and easy to never notice if you mostly view your own site on a desktop.