Responsive Design Tester

Test your website's responsive design across different screen sizes and devices. Preview how your site looks on mobile, tablet, and desktop breakpoints.

Device Preview Breakpoint Testing Custom Sizes Real-time Testing

Device Presets

Live Preview

375 × 667 px
https://infiniteforge.tech

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How to Use

Device Testing

  • • Click device presets to test common screen sizes
  • • Use custom width/height for specific testing
  • • Rotate device to test landscape/portrait modes
  • • Refresh to reload the current website

Best Practices

  • • Test on mobile (320px+), tablet (768px+), and desktop (1024px+)
  • • Check touch targets are at least 44px on mobile
  • • Verify text remains readable at all sizes
  • • Test forms and interactive elements