Mobile-Friendly Checker
Check the viewport, responsive design signals and mobile usability basics of a page.
About the Mobile-Friendly Checker
Google uses mobile-first indexing: it crawls and ranks the mobile version of your pages. A page that is hard to use on a phone – tiny text, sideways scrolling, a zoomed-out desktop layout – loses visitors and rankings.
This checker fetches the page as a smartphone and inspects the signals that make or break mobile usability: the viewport tag, responsive CSS media queries, fixed-width elements that force horizontal scrolling, browser plugins, tiny font sizes and responsive images. Google retired its own Mobile-Friendly Test in 2023, so checks like these – plus Lighthouse in Chrome DevTools – are now the way to verify mobile readiness.
Frequently asked questions
What is mobile-first indexing?
Google predominantly uses the mobile version of a page for indexing and ranking. If content or links are missing on mobile, Google may not see them at all.
What viewport tag should I use?
<meta name="viewport" content="width=device-width, initial-scale=1"> – and avoid disabling zoom.
How big should tap targets be?
At least 48 × 48 CSS pixels with some spacing, so buttons and links are easy to tap without hitting their neighbours.