Screen Resolution Checker

Fullscreen tool for display testing. Works in-browser, no signup.

Measuring…

About this tool

Live readout of every dimension your browser can see: CSS-pixel viewport (what web pages actually render into), physical pixel resolution (viewport × devicePixelRatio), the OS-reported screen size, available area minus taskbars/notches, orientation, and color depth. All numbers update live — resize your window or rotate your phone to watch them change.