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Screen Resolution Checker

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▸About this tool

See your screen resolution, browser viewport size, device pixel ratio, colour depth, and orientation. The viewport size updates live as you resize the window.

▸Privacy and details

Your files never leave your device.

Fast browser processing with no account required.

Optimized for desktop and mobile with accessible controls.

▸How to use
  1. Open the page and your screen information is shown instantly.
  2. The viewport size updates live as you drag or resize the browser window.
  3. Check the device pixel ratio to determine if your device has a HiDPI (Retina) display.
  4. The orientation indicator switches between Portrait and Landscape as you rotate your device.
▸Why use this tool

Web designers and developers frequently need to know the exact screen and viewport dimensions to test responsive layouts and media query breakpoints. This tool provides all display metrics in one place.