Screen Resolution & DPI Checker
Inspect your active screen resolution, viewport dimensions, device pixel ratio (DPR), and color depth.
What is Screen Resolution & DPI Checker?
The Screen Resolution Checker detects and displays your live hardware display metrics in real time. It inspects physical screen dimensions (width and height in pixels), active CSS viewport dimensions, device pixel ratio (Retina/DPI scaling), color bit depth, screen orientation, and responsive CSS breakpoint classifications without requiring software installations.
Designed for accuracy, speed, and privacy, this tool runs entirely on your local device with zero network latency.
How to Use the Screen Resolution & DPI Checker
- 1Open the tool to view instant automated detection of your screen and browser display parameters.
- 2Inspect Native Screen Resolution, CSS Viewport dimensions, Device Pixel Ratio (DPI), and Color Depth.
- 3Resize your browser window or rotate your mobile device to observe dynamic real-time metric updates.
- 4Click "Copy Specs" to copy a complete formatted markdown summary of your display environment for debugging or design.
Formula & Calculation Logic
Directly queries client DOM Screen and VisualViewport APIs to extract physical monitor geometry, DPR scaling factors, and color depth.
DPR = window.devicePixelRatio | Physical_Pixels = CSS_Pixels * DPR | Aspect_Ratio = W / GCD(W, H) : H / GCD(W, H)Screen Resolution & DPI Checker Frequently Asked Questions
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