Display•Runs on Request
Screen Resolution Checker
Measure viewport width, viewport height, screen resolution, device pixel ratio, and CSS breakpoints.
Developer workbench
⌘ / Ctrl + Enter to runConfigure. Run. Inspect.
Reads browser-exposed information from this device when you click Run.
14 input bytes
Output
How to Use Screen Resolution Checker
01
View current screen width, height, and viewport dimensions.
02
Resize your window to watch the responsive CSS breakpoint update (sm, md, lg, xl, 2xl).
03
Inspect your device pixel ratio (1x vs 2x Retina).
Frequently Asked Questions
What is device pixel ratio (DPR)?
DPR is the ratio between physical display pixels and CSS logical pixels (e.g. 2.0 on Apple Retina displays).
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