Audit physical monitor pixel dimensions with our free Screen Resolution tool. Inspect hardware screen width x height, measure Device Pixel Ratio (DPR), check color depth, and classify display standards (4K, QHD, Full HD) with 100% offline privacy.
Screen resolution metrics are read directly from system APIs on page load.
Check your physical pixel dimensions rendered in the graphic monitor frame.
Examine Device Pixel Ratio (DPR), color depth bits, and display classification.
Uses screen.width and screen.height to read monitor pixel dimensions regardless of window resize state.
Reads window.devicePixelRatio to determine OS display scaling (1.0x, 1.25x, 1.5x, 2.0x Retina).
All display probes execute in local browser memory. No screen dimensions are uploaded to servers.
Physical screen resolution is exposed by the DOM via screen.width and screen.height. This value reflects total monitor hardware pixels regardless of window maximization or sidebar positioning.
Device Pixel Ratio (DPR) accessible via window.devicePixelRatio indicates how many physical hardware pixels render a single logical CSS pixel. A DPR of 2.0 means 4 physical pixels (2×2 grid) construct every CSS pixel.
Screen resolutions scale across common standards: Full HD (1920×1080), Quad HD (2560×1440), and 4K Ultra HD (3840×2160). High-DPI scaling allows operating systems to render sharp typography while maintaining comfortable UI element dimensions.