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Free Screen Info — Check Your Screen Resolution & DPR
Check your screen resolution, pixel ratio, and viewport dimensions.
About Screen Info
Instantly see your screen's resolution, device pixel ratio (DPR), color depth, viewport dimensions, and available screen area (excluding taskbars and docks). Also shows whether you have a touch screen and the browser window's current size. An essential tool for web developers testing responsive designs, QA engineers verifying display specs, and anyone curious about their monitor's technical capabilities.
How to Use Screen Info
- 1Open the tool — your screen specs are displayed automatically
- 2See screen resolution, viewport size, device pixel ratio, color depth, and orientation
- 3Browser and OS info is detected automatically
- 4Resize your browser window to see viewport dimensions update in real time
When to Use Screen Info
- ▸Checking browser viewport dimensions for responsive design
- ▸Diagnosing client device specs during technical support
- ▸Providing system info for bug reports
- ▸Determining device pixel ratio for high-DPI image delivery
Frequently Asked Questions
- Why does viewport size differ from screen resolution?
- Screen resolution is your monitor's total pixels (e.g., 1920×1080). Viewport is the browser window size minus toolbars and OS chrome, which is what your website actually renders within.
- What is device pixel ratio?
- DPR is the ratio between physical pixels and CSS pixels. Retina displays have DPR 2 (or 3), meaning 1 CSS pixel = 4 (or 9) physical pixels. This matters for serving appropriately-sized images.