Mobile-Friendly Test
Test if any URL is mobile-friendly. 16 checks across viewport, tap targets, text, layout, and Core Web Vitals — with a live device preview.
What Makes a Page Mobile-Friendly?
A mobile-friendly page is one that's readable, navigable, and fast on a phone — without pinch-zoom, sideways scrolling, or accidentally tapping the wrong button. Google has used mobile-friendliness as a ranking signal since 2015 and switched to mobile-first indexing in 2019, meaning the mobile version of your page is the canonical version it ranks. The technical requirements are well-defined: a viewport meta tag with width=device-width, body text at least 12px, tap targets at least 48×48 CSS pixels with 8px spacing, content fitting the viewport without horizontal scroll, no Flash, HTTPS, and Core Web Vitals (LCP, INP, CLS) in the green range. Google retired its first-party Mobile-Friendly Test in December 2023, so this tool fills the gap — running the same 16 checks plus live PageSpeed Insights data. Follow up with the SEO Checker for full-page issues, or audit AI-bot access with the AI Crawler Checker.
How to use this tool
- 1Paste your URLEnter any public URL — the tester fetches the page server-side, so it works on staging, production, or pre-launch builds.
- 2Wait 15–30 seconds for resultsWe run 12 static checks instantly and then wait for Google PageSpeed Insights to return live mobile Core Web Vitals.
- 3Fix the failed checks firstFilter to Failed to see the highest-impact issues. Each row has a one-line fix you can apply directly. Re-run to verify.