Screen Resolution Detector
Detect your screen resolution, viewport size, device pixel ratio, and other display information.
Free Screen Resolution Detector
Instantly check your screen resolution, browser viewport size, device pixel ratio, color depth, and screen orientation. This information is useful for web developers testing responsive designs, graphic designers creating assets at the correct resolution, and users troubleshooting display settings.
Screen Resolution vs Viewport Size
Screen resolution is the total number of physical pixels on your display. Viewport size is the area available for web content (excluding browser chrome like toolbars). Device pixel ratio indicates how many physical pixels make up one CSS pixel — a ratio of 2 means a "Retina" or "HiDPI" display where each CSS pixel is rendered with 4 physical pixels.