Mobile-Friendliness Checker
Audit viewport, tap targets, font sizes and responsive behavior of any page.
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About this tool
With mobile-first indexing, Google ranks the mobile version of your page. This checker fetches your URL and audits the mobile essentials: viewport meta tag, responsive images, font-size legibility, fixed-width elements, plugin usage and interstitial hints — plus a live phone-frame preview.
How to use the Mobile-Friendliness Checker
- Enter the URL to test.
- Review the checklist of mobile factors and the phone preview.
- Fix failures — a correct viewport tag is the non-negotiable first step.
Frequently asked questions
Google retired its mobile-friendly test — why does this matter?
The ranking systems still require mobile usability; only the standalone Google tool was retired.
What is the most common mobile issue?
A missing or wrong viewport meta tag, followed by tap targets that are too small.