📱 Free Screen Size Checker
Check Your Screen Resolution & Viewport Size
Check your screen resolution, viewport size, and device dimensions with our free screen size checker. Perfect viewport tester for web developers.
What is a Screen Size Checker?
Screen Size Checker is a tool that displays your screen resolution, viewport size, and device dimensions. Our viewport tester helps web developers understand how their websites will appear on different devices and screen sizes.
Whether you're testing responsive design, checking device compatibility, or debugging layout issues, our device checker provides real-time information about your screen dimensions and viewport size.
1920 × 1080
Screen Resolution
Screen Resolution
1920 × 1080
Physical screen pixels
Viewport Size
1920 × 1080
Browser window size
Device Pixel Ratio
1.0
Screen density ratio
Color Depth
24-bit
Color bit depth
Responsive Breakpoints
Mobile
< 768px
Tablet
768px - 1024px
Desktop
1024px - 1440px
Large Desktop
> 1440px
Screen Size Checker Features
- Real-time screen resolution detection
- Viewport size monitoring
- Device pixel ratio display
- Color depth information
- Responsive breakpoint testing
- Live updates on window resize
- Fullscreen mode testing
- Copy screen information
How to Use Our Screen Size Checker
Using our viewport tester and device checker is simple:
- View current size: The tool automatically displays your current screen resolution and viewport size.
- Check responsive breakpoints: See which responsive breakpoint your current size falls into.
- Resize window: Resize your browser window to see how the viewport size changes in real-time.
- Test fullscreen: Use the fullscreen button to test how your content appears in fullscreen mode.
- Copy information: Copy the screen information for use in your development projects.