Screen resolution test

Read the display values your browser reports. Useful when checking scaling, screenshots, responsive layouts or monitor settings.

● Runs locally in this browser.

What this means

Run the test to interpret your result

Your result will be explained here, including what is normal, what may indicate a problem, and the most useful next step.

Contextual replacement recommendation

Reserved for a relevant product recommendation when a result suggests a hardware issue.

View options →

Screen resolution—

Browser viewport—

Pixel ratio—

Color depth—

Why screen resolution and viewport differ

Screen resolution describes the logical screen size exposed by the browser. The viewport is the usable page area inside the browser window. Operating-system scaling and device pixel ratio can make both differ from a monitor’s physical pixel count.