A responsive preview tool allows you to see how your website appears on different screen sizes like mobile, tablet, and desktop — ensuring a consistent experience across all devices.

With over 60% of traffic coming from mobile, testing across devices helps catch layout issues, font scaling problems, and broken elements that could hurt user experience and SEO.

Our preview tool uses viewport simulation based on real device breakpoints. While it's highly accurate for layout, it's best paired with physical device testing for performance or touch UX.

No installation required. Simply enter your URL, select a device size, and instantly preview how your site looks across mobile, tablet, and desktop resolutions.

Yes, if the website is accessible via a public staging URL. Password-protected or localhost sites won’t display unless shared externally.

It focuses on layout and responsiveness. For interaction testing like tap gestures or dropdowns, use browser dev tools or physical devices.

Chrome DevTools is great for dev environments. Our tool is faster for client use, demos, and mobile QA checks without needing browser extensions or developer access.

You can preview across common breakpoints including iPhone, iPad, 1920px desktop, and more. We continuously update based on current devices.

Yes! The responsive preview tool is 100% free and built by CodeMasters for developers, designers, and business owners.

Absolutely. Google favors mobile-first design. Using this tool to detect responsiveness issues can directly impact usability, bounce rate, and SEO rankings.