Responsive Previewer
Preview responsive designs
across 12 device widths just by entering a URL.
* If the site doesn't load, it may restrict iframe embedding.
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About Responsive Previewer
Responsive Previewer is a free web development support tool that allows you to quickly check how a single URL looks on various screen sizes (smartphones, tablets, and desktops) directly in your browser. Even without multiple physical devices, you can test for design breakages and layout behavior using standard device resolutions like iPhones, iPads, and PCs.
How to Use
Enter URL
Paste the URL of the website you want to preview into the input box and click the "Preview" button.
Select Device
Switch between Mobile, Tablet, and Desktop tabs and select the specific device (e.g., iPhone 15 Pro Max) you want to check.
Adjust Orientation & Scale
Toggle between Portrait and Landscape modes. If the screen doesn't fit, adjust the scale (e.g., 50%, 75%) to see the entire view.
Glossary
- Responsive Web Design
- A web development approach that creates dynamic changes to the appearance of a website, depending on the screen size and orientation of the device being used.
- Viewport
- The user's visible area of a web page. On mobile devices, the
<meta name="viewport" ...>tag is used to control the display width and scaling. - Media Queries
- A CSS3 feature that allows content rendering to adapt to conditions such as screen resolution, width, or height.
Frequently Asked Questions
- Q.The preview screen is blank and the website is not displayed. Why?
- If the target website has set 'X-Frame-Options' or 'Content-Security-Policy' as a security measure and does not allow iframe embedding from other sites, the browser will block the display.
- Q.Can I preview a local environment URL (localhost)?
- Yes, you can. If you have a local server running on your PC, you can enter a URL like http://localhost:3000 to test it.
Use Cases
Checking during web development
Quickly test how newly created web pages look on smartphones or PCs and identify any layout breakages during the production process.
Final check before publication
Before publishing blog posts or landing pages, confirm that they are displayed as intended without needing physical devices.
Sharing designs with clients
Use it as a confirmation tool when showing clients how their website will look across various devices.
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