Screen Resolution & Browser Info
Detect your screen resolution, viewport, color depth, DPR and more
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Instantly see your screen and browser capabilities — physical resolution, viewport size, device pixel ratio, color depth, available colors, browser name, OS and more. Useful for QA, responsive design testing and reporting bugs with full context.
How to check screen resolution
1
Open the tool
All values are populated automatically by the browser.
2
Resize to update
Resize your window — viewport values update live.
3
Copy diagnostic
Click Copy to get a plain-text dump of all values.
Screen & viewport
Physical resolution and current viewport size, updated on resize.
DPR & color depth
Device pixel ratio, color depth and orientation.
Browser & OS
Detected browser name, version and operating system.
Copy report
Copy the full diagnostic as text for bug reports or QA notes.
FAQ
DPR is the ratio of physical pixels to CSS pixels. A DPR of 2 means 4 physical pixels per CSS pixel — common on Retina and high-DPI screens.
Viewport is your browser window. Screen is the full display — they differ when the browser is windowed or has dev tools open.
Color depth is the number of bits used to represent each pixel's color. 24-bit (16.7M colors) is standard; 30-bit HDR displays use more.
No. All values come from the browser's own JavaScript APIs and stay on your device.
Orientation reports the screen's physical layout. On laptops it's usually landscape regardless of browser size.