Screen Resolution Checker

Real-time screen and viewport detection

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Full guide

How to Check Your Screen Resolution and Viewport Size

Learn the difference between screen resolution and browser viewport, how DPR and Retina scaling work, and how to read live display metrics for design.

Read the guide

About Screen Resolution Checker

Instantly detect your screen resolution, viewport dimensions, available screen size, device pixel ratio, color depth, aspect ratio, and orientation. Auto-updates when you resize the window. Identifies Retina/HiDPI displays. Useful for responsive design testing.

Screen Resolution Checker Features

  • Real-time detection
  • Viewport & screen sizes
  • Retina/HiDPI detection
  • Auto-update on resize

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