Responsive Design Tester
Preview any website on different device sizes — from iPhone SE to 4K Desktop.
🔒 No uploads⚡ Instant🆓 Free
📱 iPhone SE — 375 × 667px (portrait)
📱💻🖥️
Enter a URL above to preview it on different devices
How It Works
1
Enter a website URL to preview.
2
Select a device from the presets (iPhone, iPad, Pixel, Desktop, etc.).
3
Toggle orientation and zoom to inspect the layout.
Features
✓10 device presets (iPhone, iPad, Pixel, Samsung, MacBook, Desktop)
✓Portrait and landscape orientation toggle
✓Adjustable zoom/scale slider
✓Live iframe preview
✓Pixel-accurate dimensions
✓No data uploaded — works in your browser
Frequently Asked Questions
Does this render exactly like a real device?▼
It uses an iframe with the correct viewport dimensions. The rendering is identical to desktop browser behavior at that width, though it won't simulate mobile-specific features like touch events.
Why does a website show a blank page?▼
Some websites block iframe embedding with X-Frame-Options or CSP headers. This is a security measure by the site owner.
Does this upload my URL?▼
No. The iframe loads the URL directly in your browser. Nothing is proxied through any server.
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