Screen Resolution Checker
Detect screen resolution, viewport size, DPI, color depth and display info in real time.
What is screen resolution?
Screen resolution refers to the number of pixels displayed on your screen, expressed as width × height (e.g., 1920×1080). Higher resolution means more pixels and sharper images.
What is device pixel ratio (DPR)?
DPR is the ratio of physical pixels to CSS pixels on your device. A DPR of 2 means one CSS pixel uses 2×2 physical pixels. Retina and high-DPI displays typically have DPR of 2 or 3.
What is the difference between screen and viewport?
Screen resolution is the total display size in pixels. Viewport is the visible area of the web page in the browser window, which is smaller than the screen due to browser chrome, toolbars, and scrollbars.
Why does my resolution change when I resize the browser?
The viewport size changes when you resize the browser window, but the screen resolution stays the same. This tool tracks both in real time so you can see the difference.