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Viewport Meta Tag Simulator - Online Test Mobile Rendering

Design Developer Tools meta mobile simulator viewport
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Viewport Settings

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<meta name="viewport" content="width=device-width, initial-scale=1.0">
Simulated: 375 × 667 CSS pixels · DPR 2 · Physical: 750 × 1334

Frequently Asked Questions

The viewport meta tag tells the browser how to control the page's dimensions and scaling on different devices. It's essential for responsive web design, allowing pages to adapt to various screen sizes.

Without a proper viewport meta tag, mobile browsers assume a wider layout (often around 980px) and then shrink it to fit the screen, making text tiny. Use <meta name="viewport" content="width=device-width, initial-scale=1.0"> to fix this.

It disables pinch-to-zoom and double-tap zoom on mobile devices. This can be useful for web apps that mimic native behavior, but it may harm accessibility. Use with caution.

Initial-scale sets the zoom level when the page first loads. Minimum-scale and maximum-scale limit how far the user can zoom in or out. They prevent unwanted zooming but should be used carefully to respect user preferences.

Viewport-fit controls how the viewport fits into the device's display. It's mainly used for notched devices (like iPhone X and later). cover allows edges to extend under the notch or home indicator.
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