How do I check if my site is mobile-friendly?

Test on a real phone, use Chrome DevTools device mode, check Search Console’s mobile usability reports, and run a Scanly audit — it flags viewport, tap-target, readability, and mobile-speed issues in one scan.

Does mobile usability affect Google rankings?

Yes. Google uses mobile-first indexing (it ranks your mobile version) and mobile page experience — including Core Web Vitals — is a confirmed ranking signal.

What is the most common mobile issue?

Content wider than the screen (horizontal scrolling), usually from fixed-width images, tables, or embeds — followed by tap targets placed too close together.

Why Your Site Looks Bad on Mobile and How to Fix It With a Single Scan

Over 60% of web traffic is mobile — yet most sites are still designed on a desktop and never properly checked on a phone. The result: tiny text, overlapping buttons, sideways scrolling, and visitors who bounce in seconds. Since Google ranks your mobile version first, a broken phone experience is also a ranking problem.

The fix doesn't require redesigning your site. Run a free Scanly audit — it flags viewport, readability, tap-target, and mobile-speed issues in one 60-second scan. Below are the 7 culprits it looks for, so you know exactly what to fix.

The 7 mobile killers

1. Missing viewport meta tag

Symptom: Site appears zoomed-out and microscopic on phones.

Fix: Ensure every page has <meta name="viewport" content="width=device-width, initial-scale=1">. Every modern theme includes it — page builders and custom templates sometimes drop it.

2. Text too small to read

Symptom: Visitors must pinch-zoom every paragraph.

Fix: Use a minimum 16px body font on mobile. Check your theme’s mobile typography settings — never go below 14px for body text.

3. Tap targets too close together

Symptom: Buttons and links overlap; users tap the wrong thing.

Fix: Google recommends targets ≥48×48px with ≥8px spacing. Stack buttons vertically on mobile instead of side-by-side.

4. Content wider than the screen

Symptom: Sideways scrolling — the #1 mobile frustration.

Fix: Usually caused by fixed-width images, tables, or embeds. Set images to max-width:100%, wrap tables in scroll containers, and give videos responsive wrappers.

5. Aggressive popups and interstitials

Symptom: Full-screen popups cover content the second the page loads.

Fix: Google penalizes intrusive interstitials on mobile. Delay popups, use small banners, and make the close button big and obvious.

6. Unoptimized images slowing mobile

Symptom: Pages take 8+ seconds on 4G while desktop feels fine.

Fix: Serve responsive images (srcset), compress to WebP, and lazy-load below-the-fold media. Mobile users are often on slower networks — every MB counts.

7. Desktop-only navigation

Symptom: Huge menus that don’t collapse, dropdowns that don’t work by touch.

Fix: Use a hamburger menu with touch-friendly submenus. Test every menu path on a real phone, not just a resized desktop browser.

The single-scan workflow

Scan your site — get mobile-usability + speed issues prioritized in one report.
Fix viewport and horizontal-scroll issues first (highest bounce impact).
Enlarge fonts and tap targets across templates, not page by page.
Compress mobile images and re-test on a real phone over 4G.
Re-scan monthly. Go deeper with our performance audit guide and no-code Core Web Vitals fixes.

📱 Scan My Mobile Site Free

Frequently Asked Questions

My theme says "responsive" — why do I still have issues?

"Responsive" means the grid adapts — but plugins, embeds, tables, popups, and custom content routinely break out of it. A scan catches the exceptions your theme demo never had.

Should I build a separate mobile site?

No — Google recommends a single responsive site. Separate mobile URLs (m.example.com) create duplicate-content and maintenance headaches. Fix your responsive implementation instead.

Conclusion

A site that looks broken on mobile bleeds traffic and rankings — but the fix is rarely a redesign. Run one scan, fix viewport and overflow issues first, then fonts, tap targets, and images. Check the result on a real phone and keep auditing with our performance audit guide.