Responsive Breakpoint Tester
Test how your website looks on different devices and screen sizes. Preview all common breakpoints instantly!
Features
- 15+ device presets
- Custom dimensions
- Portrait/Landscape toggle
- Live preview
- All major breakpoints
How to Use
- 1Enter your website URL
- 2Click Load to preview
- 3Select a device or enter custom size
- 4Toggle rotation for portrait/landscape
Frequently Asked Questions
Why can't I see some websites?
Some websites block iframe embedding for security. Try your own sites or those that allow embedding.
What are common breakpoints?
Mobile: 375-430px, Tablet: 768-1024px, Laptop: 1366-1440px, Desktop: 1920px+
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