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Screen Resolution Info
Instantly view your screen resolution, viewport dimensions, device pixel ratio, colour depth and more.
Frequently Asked Questions
Screen resolution is the total number of physical pixels your display has (e.g. 1920×1080). Viewport size is the area of the browser window available to a web page — it excludes the browser UI, taskbar, and scrollbars. These numbers will differ if your browser is not maximised.
DPR is the ratio between physical pixels and CSS pixels. A DPR of 2 means a Retina or HiDPI screen where each CSS pixel is drawn using 2×2 physical pixels, producing sharper text and images.
Knowing the viewport size helps you test CSS breakpoints and responsive layouts. DPR helps you decide whether to serve higher-resolution images (@2x assets) to HiDPI screens.