Is this responsive website tester completely free?

Yes! This responsive website testing tool is 100% free to use. No registration, no subscription, no hidden fees. Just enter your URL and start testing.

Why doesn't my website load in the tester?

Some websites block being loaded in iframes for security reasons (using X-Frame-Options or Content-Security-Policy headers). This is a browser security feature and cannot be bypassed. Try testing sites you own or sites that allow iframe embedding.

What screen sizes and devices are available for testing?

The tool includes presets for popular devices including iPhone SE, iPhone 14 Pro, Samsung Galaxy, Google Pixel, iPad Mini, iPad Pro, and various desktop resolutions. You can also enter custom width and height dimensions.

Can I interact with the website in the preview?

Yes! The previews are fully interactive. You can scroll, click links, fill out forms, and test all functionality just as you would on a real device.

What responsiveness issues can this tool detect?

The tool can detect horizontal overflow (content wider than the viewport causing horizontal scrollbars), viewport meta tag issues, and provides warnings about touch target sizes based on visible scrollbar behavior.

Responsive Website Tester - Test Your Site on All Screen Sizes

Responsive Website Tester - Test Your Site on All Screen Sizes | Free Tool

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How to Use This Free Tool

Enter a website URL above and click "Test Responsiveness" to see how it looks on different devices. You can interact with the live preview, rotate between portrait and landscape, switch between single and multi-device views, and check for responsiveness issues. Note: Some websites block iframe embedding for security reasons.

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Device Preset

Custom Size

View Mode

Zoom: 100%

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No Website Loaded

Enter a URL above and click "Test Responsiveness" to preview your website on different screen sizes.

📱 Responsive Website Tester

How to Use This Free Tool

No Website Loaded

⚠️ Responsiveness Analysis 0 issues