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Preview any URL across multiple device sizes — phone, tablet, laptop, TV and more.
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.
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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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.
Share this tool
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.
