반응형 디자인 테스터

Responsive design ensures websites work well across all devices and screen sizes. This tool lets you preview how your site appears on different viewports without needing physical devices. By testing at various breakpoints, you can identify layout issues, unreadable text, or broken components that only appear on specific screen sizes.

Enter the URL of the website you want to test (it must allow iframe embedding for preview to work). Select a device preset (iPhone SE, iPhone 12 Pro, iPad, Desktop HD, etc.) to quickly set viewport dimensions. Or choose Custom to enter exact width and height. Toggle between portrait and landscape orientations. The preview updates in real-time. This helps catch responsive issues before users report them.

Mobile: 320px-480px (small phones), 481px-767px (large phones). Tablet: 768px-1024px (iPads, tablets). Desktop: 1025px-1439px (laptops), 1440px+ (large desktops). Test your design at these breakpoints to ensure it adapts smoothly. Many frameworks use similar breakpoints (Tailwind: sm:640px, md:768px, lg:1024px, xl:1280px, 2xl:1536px).