Does this replace Google’s Mobile-Friendly Test?

No. It’s a fast visual checker with lightweight heuristics and a live preview.

What viewport should I use?

width=device-width, initial-scale=1 is a safe default for most sites.

Is zoom disabling bad?

Yes. Avoid user-scalable=no as it harms accessibility.

Mobile Friendliness Checker

Why Mobile Friendliness Matters

Google prioritizes mobile-friendly websites in search rankings. If your site doesn’t adapt to smaller screens, it could hurt your visibility.

Tips for Better Mobile UX

✅ Use a responsive design with a flexible grid
✅ Include a <meta name="viewport"> tag
✅ Avoid small font sizes and touch elements too close together
✅ Optimize loading speed and mobile usability

How to Diagnose & Fix Common Issues

1) Viewport not set

Add this to your <head>:

<meta name="viewport" content="width=device-width, initial-scale=1">

Avoid user-scalable=no or maximum-scale=1 — these block pinch-zoom and harm accessibility.

2) Content wider than screen

Use fluid widths (max-width: 100%) for images/iframes.
Avoid fixed widths (e.g., width: 1200px) on containers.

3) Tiny text / tap targets

Set base font size to ~16px and scale up headings.
Make buttons/links at least ~44px height with comfy padding.

4) Heavy assets on mobile

Use srcset/sizes so mobile loads smaller images.
Defer non-critical JS and lazy-load below-the-fold media.

Before/After Example

Before: Fixed layout, hero image 2200px wide, no viewport tag. On a phone, users must pinch and scroll sideways.

After: Added viewport tag, switched hero to responsive srcset, set container to max-width with percentage widths. The page fits perfectly on a 375px viewport.

Quick Mobile QA Checklist

📱 Page fits in a 375 px frame without horizontal scrolling
🔍 Zoom is allowed (no user-scalable=no)
🖼️ Images don’t overflow containers; srcset is used
🧭 Navigation is tappable and doesn’t overlap
⚡ Above-the-fold content loads fast on 4G

FAQs

Does this tool replace Google’s Mobile-Friendly Test?

No — this is a quick visual checker with simple on-page signals and a live preview. It’s fast, private, and requires no API.

Why is disabling zoom a problem?

It harms accessibility for users who rely on pinch-zoom. Let the browser manage zoom by omitting user-scalable=no.

What viewport content should I use?

width=device-width, initial-scale=1 is a solid default for most sites.