Responsive Website Tester

Preview any URL at different device sizes — quick, colorful and local.

Grid Device frame Compare Dark mode on site

Note: Due to browser security, capturing screenshots of cross-origin sites may be blocked. Use the Open button to open externally if screenshot fails.

Quick sizes

Custom label

1366 × 768 Desktop

Desktop

Compare: Left vs Right

Left

Right

Built with ❤️ — try different URLs and sizes. Works best for same-origin sites when using screenshot feature.