Mobile-Friendly Visual Tester (All Devices)

This tool lets you preview how any website URL looks on a wide variety of mobile devices and screen sizes, simulating exact device dimensions and theme frames (dark or light). You enter the URL, select a device, and instantly see the responsive rendering inside a styled frame.

How It Works

✓ Enter a full URL including protocol (https://).
✓ Select from a large list of real device screen sizes (phones, tablets, laptops).
✓ Choose between dark or light frame themes for the preview container.
✓ Click Preview to load the live website inside an iframe sized exactly to the selected device’s screen dimensions.
✓ Use Export Screenshot to attempt saving a visual snapshot (currently a placeholder, real export needs backend or advanced browser APIs).

What You Get

✓ Quick visual check of website responsiveness across devices without physical hardware.
✓ Easy switching between device sizes and UI themes.
✓ Instant live preview embedded in a neat frame matching device specs.

Important Notes & Integration

✓ This tool uses simple iframe embedding and CSS styling to simulate device viewports.
✓ It requires the target site to allow iframe embedding (some sites block this via security policies).
✓ The Export Screenshot button is a placeholder – true screenshot capture requires backend processing or advanced browser capabilities, which this client-side demo cannot do alone.
✓ You can copy and use this standalone HTML + JavaScript snippet directly on your own site for quick testing.
✓ This is a helpful testing utility but not a full emulator or device simulator – for pixel-perfect emulation, dedicated software or hardware devices are still recommended.