Mobile-friendly test: is your website ready for phones?
Enter any URL to check viewport, responsive layout, tap targets, fonts, and mobile performance - a free, no-signup replacement for Google's retired Mobile-Friendly Test.
We fetch and analyze your page's HTML. No data is stored. A free replacement for Google's retired Mobile-Friendly Test.
Quick answer: A mobile-friendly test checks whether a page renders and works on phones - viewport configuration, responsive layout, legible text, tap-target spacing, and mobile load performance. Google retired its own Mobile-Friendly Test in December 2023; this free tool fills that gap by analyzing your page's HTML and meta tags instantly, with no signup.
How the mobile-friendly test works
Enter a URL and the tool fetches the page using a mobile user-agent, then analyzes the HTML markup, inline CSS, and meta tags for the signals that most affect the mobile experience. It does not render the page in a real browser, so it focuses on the high-impact, HTML-level checks you can fix quickly.
What we check
| Signal | Why it matters on mobile |
|---|---|
| Viewport meta tag | Renders the page at device width; the single most important signal |
| Responsive CSS | Media queries let the layout reflow instead of breaking |
| Horizontal scroll | Fixed-width elements wider than the screen force side-scrolling |
| Tap targets & fonts | Small text and cramped buttons frustrate touch users |
| Responsive images | srcset avoids shipping desktop-sized images over mobile data |
| Render-blocking scripts | Head scripts without defer/async delay first paint on slow networks |
A free alternative to Google's Mobile-Friendly Test
Google retired its Mobile-Friendly Test (and the Search Console Mobile Usability report) on December 1, 2023, pointing users to Lighthouse and Search Console instead. That left a gap for the quick, public, single-URL check people relied on. Here is how this tool compares to the official options that remain.
| Capability | This tool | Google Mobile-Friendly Test | Lighthouse | Search Console |
|---|---|---|---|---|
| Availability | Free, live | Retired Dec 1, 2023 | Free | Free |
| Test any single URL instantly | Yes | Yes (before retirement) | Yes | No - reports at property level |
| No signup or site verification | Yes | Yes | Yes (in-browser) | Requires a verified property |
| Plain-English prioritized fixes | Yes | Limited | Partial | Limited |
| Best for | A quick public URL check | No longer available | Deep lab audits | Monitoring your own site |
Why mobile-friendliness matters in 2026
- Mobile-first indexing: Google indexes and ranks the mobile version of your page. A broken mobile experience drags down desktop rankings too.
- Traffic share: More than 60% of global web traffic is mobile. A poor mobile experience loses most of your audience.
- Core Web Vitals: LCP, CLS, and INP are measured on mobile. Missing viewport, unoptimized images, and blocking scripts hurt these scores directly.
- AI search: AI engines weigh page quality, including mobile usability, when selecting sources to cite in answers.
Essential mobile-friendly checklist
- Add
<meta name="viewport" content="width=device-width, initial-scale=1">to every page's<head>. - Use media queries, flexible grids, and relative units (%, rem, vw) instead of fixed pixel widths.
- Keep body text at 16px or larger so users don't need to zoom.
- Make tap targets at least 48x48px with adequate spacing.
- Serve responsive images with
srcset+sizesand addloading="lazy"below the fold. - Eliminate horizontal scroll: use
max-width: 100%on images andoverflow-x: autoon tables.
Frequently asked questions
- Didn't Google have a mobile-friendly test?
- Yes. Google retired its Mobile-Friendly Test tool and API on December 1, 2023, and removed the Mobile Usability report from Search Console. It now points people to Lighthouse and Search Console. This free tool fills that gap with a fast, no-signup HTML-level alternative.
- How do I check if my website is mobile friendly?
- Paste your URL above and click Test mobile-friendliness. The tool fetches your page with a mobile user-agent, analyzes the HTML and meta tags, and returns a 0-100 score plus a prioritized list of issues.
- What is the viewport meta tag and why is it critical?
- It tells mobile browsers to render the page at device width instead of desktop width. Without it, the page appears zoomed out with tiny text. A missing viewport tag means a page is effectively not mobile-friendly.
- Why does mobile-friendliness matter for SEO in 2026?
- Google uses mobile-first indexing - it ranks the mobile version of your page. Over 60% of traffic is mobile, Core Web Vitals are measured on mobile, and AI engines weigh mobile usability when choosing sources to cite.
- What is a good mobile-friendliness score?
- 80-100 means strong foundations, 50-79 means significant issues, and below 50 indicates critical problems. The highest-impact fix is almost always the viewport meta tag.
- How do I make my website mobile friendly?
- Add the viewport meta tag, use responsive CSS (media queries, flexible grids, relative units), keep body text at 16px+, make tap targets at least 48x48px, serve responsive images with srcset, and remove fixed-width elements that cause horizontal scrolling.
- What's the difference between mobile-friendly and responsive design?
- Responsive design is the technique - a fluid CSS layout that adapts to any screen. Mobile-friendly is the outcome - a page that's usable on phones. Responsive design is the most common and reliable way to be mobile-friendly.
- Does this test render my page like a real phone?
- No. It analyzes your HTML, inline CSS, and meta tags with a mobile user-agent to catch the highest-impact, fixable issues fast. For pixel-perfect rendering and field metrics, pair it with Lighthouse and Search Console.
- Is the mobile-friendly test free?
- Yes - free, no signup, and no data stored. Enter a URL and get a 0-100 score with prioritized fixes in seconds.
Related free tools
Keep going with these tools
Website Speed Test
Check your site performance in seconds
Free Website Grader
Score your whole site in seconds
Image Compressor & Optimizer
Shrink JPG, PNG & WebP images
Website Carbon Calculator
How green is your website?
Responsive Design Checker
Preview any site at every screen size
Website Accessibility Checker
Find WCAG issues in seconds
Want a team to handle it for you? We design and build fast, SEO-ready websites that convert. Explore AI web development.
Related guides
Go deeper with our guides
Practical, up-to-date guides on the strategy, costs, and execution behind this tool.
Responsive Web Design for Small Businesses: Mobile-First in 2026
Why mobile-first responsive design is critical in 2026, how to test your site, and the principles that drive conversions.
Website Speed Optimization Guide for Small Businesses in 2026
Optimize site speed: Core Web Vitals, image compression, caching, and CDN steps that improve SEO and conversions.
UX Design Principles for Small Business Websites
UX principles that drive revenue: navigation, forms, mobile patterns, accessibility, and a full audit checklist.
Ready to ship your next product?
Tell us what you're building. Senior engineers will scope, plan, and start delivering your product with production-ready architecture - fast.