Screen Resolution Checker

Filing a bug report that asks for your resolution, testing a responsive layout, or just wondering what your phone's real pixel count is? This page reads it all straight from your browser: screen resolution, current viewport size, device pixel ratio, color depth and orientation.

The two most confused numbers are shown side by side. Screen resolution is what your display hardware reports in CSS pixels; the viewport is the area your browser actually gives to web pages — smaller because of toolbars, scrollbars and window size. Resize the window and watch the viewport values follow live.

Device pixel ratio (DPR) explains why a laptop that advertises 2880×1800 reports 1440×900: on high-density screens each CSS pixel is drawn with multiple physical pixels. The tool shows the ratio and multiplies it back, so you see both the CSS and the physical resolution of your display.

At the bottom there is a ready-to-copy summary line with all values — paste it into a support ticket, a QA checklist or a chat with your designer. Everything is read locally through standard browser APIs and never leaves your device.