📱 Mobile Viewport Checker

Check if your page has a proper viewport meta tag for mobile devices. Essential for mobile-first SEO and Google ranking.

Check Viewport Tag

Enter any URL to check its viewport meta tag configuration for mobile devices.

About the Mobile Viewport Checker

The viewport meta tag is one of the most important elements for mobile SEO. Since Google switched to mobile-first indexing, how your page renders on mobile directly affects your rankings. A missing or misconfigured viewport tag is a guaranteed mobile usability failure.

The Standard Viewport Tag

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

Viewport Properties

  • width — Should always be device-width to match the screen. Never set a fixed pixel width.
  • initial-scale — Start at 1 (100% zoom). Required for proper rendering.
  • user-scalable — Should be yes or omitted. Setting to no is an accessibility violation.
  • maximum-scale — Avoid setting to 1.0 as it blocks zooming, same as user-scalable=no.
  • minimum-scale — Rarely needed. Omit unless you have a specific reason.

Google's Requirements

Google's mobile-friendly test checks for viewport configuration. The minimum requirement is width=device-width, initial-scale=1. Pages without this fail Google's test and may lose mobile rankings.

Frequently Asked Questions

What is the viewport meta tag?
The viewport meta tag tells mobile browsers how to scale and render your page. Without it, mobile browsers render pages at a desktop width (usually 980px) and users must pinch-to-zoom to read content — a terrible mobile experience.
What should my viewport tag look like?
The recommended standard is: <code>&lt;meta name="viewport" content="width=device-width, initial-scale=1"&gt;</code>. This tells browsers to match the device's screen width and start at 1:1 scale.
Does this affect SEO?
Yes. Google uses mobile-first indexing, meaning it primarily uses the mobile version of your page for ranking. A missing or incorrect viewport tag can hurt your mobile usability scores and rankings.
What about user-scalable=no?
Setting user-scalable=no or maximum-scale=1.0 prevents users from zooming, which is an accessibility violation. Google flags this as a mobile usability error. Always allow user scaling.