Viewport Size DetectorFree Online
Detect your browser viewport size in real-time. See width, height, and device type instantly. Perfect for responsive design testing and debugging.
100% Free
Real-Time Detection
Device Type Detection
0 × 0
pixels
Common Breakpoints:
Mobile: < 640px
Tablet: 640px - 1023px
Desktop: ≥ 1024px
How to Use the Viewport Size Detector?
Detect your browser viewport size in real-time in three easy steps.
1
Open the Tool
The tool automatically detects your current viewport size when you open the page. No setup required!
2
Resize Your Browser
Resize your browser window and watch the dimensions update in real-time. The device type will change automatically.
3
Copy Dimensions
Click "Copy Dimensions" to copy the viewport size to your clipboard. Perfect for sharing or documentation.