System Information Tool

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Responsive Website Tester

Preview any public URL in popular device sizes, rotate, apply grid overlay and fit-to-screen.

Website URL

Presets

iPhone 14

Pixel 6

iPad

iPad Pro

Laptop 1366×768

MacBook 1440×900

Desktop 1920×1080

Width

Height

Fit Fit to container 100% (no scale) 75% 50%

Rotate

Note: Due to browser security (CORS), screenshots of cross-origin sites will not work in many cases. The screenshot attempts to capture the preview frame and will succeed for same-origin iframes or when the target allows embedding and CORS capture.

Preview • 390 × 844

Theme:

White Frame Black Frame Rounded (phone)

Fit

Viewport scale: auto

Rendered inside an iframe — interactive but limited by the site policies (X-Frame-Options/CSP may block some sites).

Built with ❤️ — single-file responsive tester. Want additional features (emulate user-agent, throttle network)? Ask and I can add them.