Device Info
Check screen resolution, viewport size, DPI, and browser details.
Screen Resolution
Instantly check your screen resolution, viewport size, device pixel ratio, and estimated DPI. Works on monitors, laptops, phones, and tablets.
Screen Size Checker
Check your screen size, resolution, viewport dimensions, and device pixel ratio instantly in your browser.
Viewport Size Checker
Check your browser viewport width and height in pixels. Useful for web developers testing responsive designs.
DPI Checker
Check your screen's DPI (dots per inch) and pixel density. See your device pixel ratio and estimated PPI.
What Is Device Info?
Device info tools report the technical specifications of your screen and browser as detected in real time. This includes your screen resolution, viewport size, device pixel ratio (DPI scaling), color depth, and browser user agent. These details are useful for web developers, designers, and anyone troubleshooting display issues.
Your screen resolution is the total number of pixels your display can render — for example, 1920×1080 (Full HD) or 3840×2160 (4K). The viewport size is the area available to web content after subtracting browser chrome like the address bar and scrollbars. The device pixel ratio tells you how many physical pixels correspond to one CSS pixel, which is important for Retina and high-DPI displays.
Privacy
All device information is read using standard browser JavaScript APIs and is displayed only on your screen. DeviceKit does not store, upload, or share any of your device details. The data exists only in your browser tab and disappears when you close the page.