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Preview any URL across multiple device sizes — phone, tablet, laptop, TV and more.
Enter a URL and click Preview to see it across device sizes.
Use ⬇ Save to capture the visible preview as a PNG image, or ⤢ Popup to open the page in a correctly-sized browser window.
Sites with strict security headers may block embedding — use the popup button for those.
Preview any website at multiple device screen sizes simultaneously — from smart watch to 4K TV. See how your site looks on phones, tablets, laptops, and large displays. Open each device view in a correctly-sized popup window.
Responsive Preview allows users to test and visualize any website across multiple device screen sizes simultaneously, ranging from smart watches to 4K displays. By opening each device view in a correctly sized popup window, it streamlines multi-device layout checks directly in the browser without requiring manual window resizing or dedicated software installations.
Good to know: This tool is designed for visual previewing and may not replace automated end-to-end testing frameworks or native device emulators required for complex interactive debugging.
Quickly preview and test how any website renders across multiple device screen sizes simultaneously.
Enter the website URL to test
Paste the full URL of the website you want to check into the input field at the top of the tool.
Select your desired device breakpoints
Choose from the available device categories including mobile, tablet, laptop, and 4K TV displays.
Launch the responsive preview windows
Click the preview button to open each selected device view in a correctly-sized popup window.
Compare layouts across multiple screens
View all open windows simultaneously to identify layout issues or breakpoint inconsistencies across different resolutions.
Estimated time: PT1M
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Learn how to use design tools effectively to create stunning visuals. Master CSS generators, color palettes, and accessibility checkers with this expert guide.
Responsive Preview: Multi-Device Website Testing Tool
Preview any website across phones, tablets, and 4K displays simultaneously. Use Responsive Preview to test breakpoints and mobile views in popup windows.
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