Instant Results
Enter a URL and get the viewport status in seconds, no setup, no extensions, no browser devtools required.
Meta Viewport Checker
Enter any URL and click Check Viewport. The tool fetches the page, parses the HTML, and reports the viewport tag status along with any configuration issues found.
Guide
How to Use the Viewport Checker
1
Enter the Page URL
Paste any webpage URL into the input field.
2
Click Check Viewport
Click Check and the tool reads the viewport meta tag.
3
Review the Status
See if your page is properly set up for mobile responsive viewing.
4
Fix Any Issues
If issues are listed, each one explains what is wrong and why it matters. Add or correct the viewport tag in your HTML head section and re-check to confirm the fix.
A Missing Viewport Tag Breaks Mobile
One missing line of HTML can make an entire site unusable on mobile. The viewport checker pulls any URL and tells you whether the meta tag exists, what scale it sets, and whether mobile rendering will respect it.
Run it after every theme update or page builder change to catch the silent regressions that hurt mobile conversions.
Benefits
Why Use Our Viewport Checker?
Deep Tag Analysis
Goes beyond detecting the tag, checks for width=device-width, initial-scale=1, and flags accessibility issues like user-scalable=no and maximum-scale=1.
Mobile-First Indexing
Google uses mobile-first indexing. A missing or broken viewport tag can hurt your rankings. Use this tool to verify any page is properly configured.
Googlebot User-Agent
Pages are fetched using a Googlebot user-agent so you see the HTML exactly as Google sees it, not a cached or redirected version shown only to humans.
Accessibility Warnings
Flags viewport settings that block users from zooming in, a WCAG accessibility requirement, so you can fix issues before they affect your users.
Check Any URL
Works on any publicly accessible URL, your own site, a competitor, a client site, or any page you need to audit. No login or API key needed.
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FAQ
Frequently Asked Questions
Common questions about meta viewport tags and mobile-friendliness.
What is a meta viewport tag?
The meta viewport tag tells browsers how to scale a page on different screen sizes. Without it, mobile browsers render the page at desktop width and then shrink it down, making text too small to read.
What is the correct viewport tag?
The recommended value is: <meta name="viewport" content="width=device-width, initial-scale=1">. This tells the browser to match the screen width and start at 1x zoom.
Why is user-scalable=no flagged as an issue?
user-scalable=no disables pinch-to-zoom on touch devices. This is a WCAG 1.4.4 accessibility violation that prevents users with low vision from zooming in to read content.
Does a missing viewport tag affect SEO?
Yes. Google uses mobile-first indexing and considers mobile-friendliness a ranking factor. Pages without a viewport tag typically fail the mobile-friendly test in Google Search Console.
Can I check pages that require login?
Only publicly accessible pages can be checked, the tool fetches the URL the same way a search engine would. Password-protected or login-gated pages will return an error or show the login page HTML instead.