🖥️ Screen Resolution Checker

What is Screen Resolution Checker?

Screen Resolution Checker is a diagnostic tool that instantly detects your monitor's physical pixel dimensions, logical resolution, pixel density (DPI), and available viewport space. It helps developers and users understand how their display renders web content.

How to Use Screen Resolution Checker

1. Open the tool in your web browser
2. The tool will automatically detect and display your screen metrics
3. Resize your browser window to see the viewport dimensions update in real-time

Why Use Our Screen Resolution Checker?

• Instantly view your screen width and height in pixels
• Detect browser viewport size (the actual visible area of a webpage)
• Check your device pixel ratio (Retina display detection)
• No software installation required — runs instantly

Common Use Cases

• Developers checking viewport sizes for responsive web design
• Verifying if your monitor is running at its native 1080p, 1440p, or 4K resolution
• Providing exact screen details to tech support for troubleshooting

Frequently Asked Questions

• What is the difference between screen size and viewport?▾
  Screen size is your physical monitor resolution. Viewport is the actual viewable area of your browser window.