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Home / Free Tools / Mobile Responsive Checker
Free Website Tool

Free Mobile Responsive Checker

Preview any website on phone and tablet screens and check the settings that make it work well on mobile.

Try it with

Free, no sign-up. We fetch the public page you enter from our server to run the checks. Results are kept for a few minutes and not shared.

How It Works

How to Use the Mobile Responsive Checker

  1. Enter the website address you want to test.
  2. Click Analyse to run the mobile checks and load the device previews.
  3. Switch between phone, tablet and desktop to see how the layout adapts.
  4. Fix anything marked Fix, such as a missing viewport tag or fixed-width sections, then test again.

Why It Matters

Most visitors in Pakistan browse on their phones, and Google indexes the mobile version of a page first. A site that only looks right on a laptop loses visitors and rankings, even if the desktop design is excellent.

The checker looks at the code that makes a page responsive: the viewport tag, CSS media queries, fixed-width elements, responsive images and text sizes. It then shows the page inside phone and tablet frames. Some websites block being shown inside other pages as a security setting; for those, the checks still run and you can open the page in Google's mobile test.

Related guides

FAQ

Mobile Responsive Checker: Questions

What does mobile responsive mean?
The layout adapts to the screen: columns stack, text stays readable without zooming and nothing scrolls sideways, whether the visitor uses a phone, tablet or computer.
Why does the preview not show my site?
Your site may block being shown inside other websites with an X-Frame-Options or CSP header, which is a good security setting. The checks still run, and you can view the page in the Google PageSpeed mobile test instead.
Is the preview exactly what a real phone shows?
It is very close for layout, but real phones also differ in fonts, browser bars and touch behaviour. Always test on a real phone before launch.
How do I make an old website mobile-friendly?
Small fixes include adding the viewport tag and removing fixed widths. Older sites usually need a responsive redesign; see our responsive web design service.
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