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Paste any website URL above and click Preview to see it across 20+ device sizes. Switch devices from the left panel.

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Preview Your Site Across Devices

This multi-device preview tool shows how a website or web app looks across several screen sizes at once — desktop, tablet and mobile — side by side in your browser. Instead of resizing your window repeatedly, you can spot responsive layout issues, broken breakpoints and overflowing content at a glance.

It is a quick way to sanity-check responsive design during development or before a launch, with no browser extensions or software to install.

Frequently Asked Questions

The tool loads your page in several frames sized to common device widths at the same time, letting you compare layouts side by side.
It covers typical desktop, tablet and mobile widths so you can check the main responsive breakpoints quickly.
It is great for checking layout and responsiveness, but it simulates screen size rather than real hardware. For touch behaviour or device-specific bugs, test on an actual device too.
You can preview any URL the browser can reach. Some sites block being embedded in frames, which can prevent preview.
Yes, the device preview tool is free to use.

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