View your browser, OS, screen resolution and device info
Built & maintained by Pappu Venkata Subbi Reddy, founder of Clacify
Clacify's Screen & Browser Info tool displays your current browser name and version, operating system, screen resolution, viewport dimensions, device pixel ratio, touch support status, and user agent string. Useful for developers debugging responsive design issues ('why does it look different on their screen?'), support teams diagnosing user environments, and QA testers documenting test conditions.
Open Clacify's Screen & Browser Info tool — your screen resolution is displayed instantly (e.g. 1920×1080). This shows the full screen resolution in physical pixels. The viewport size (browser window area) and device pixel ratio (DPR) are also shown, which are important for responsive web design.
Device Pixel Ratio (DPR) is the ratio between physical pixels on the screen and logical CSS pixels. A DPR of 2 (Retina/HiDPI) means 2 physical pixels per CSS pixel — text and images appear sharper. Most modern smartphones have DPR of 2–3; standard monitors have DPR of 1.