What Is Screen Resolution?
Screen resolution is the number of pixels your display can show, measured as width × height. It determines how sharp text and images look on your screen. Higher resolutions mean more detail.
Your browser reports this value to websites so they can adjust layouts and serve appropriately sized images. On high-DPI screens (like Retina displays), the reported resolution may differ from your monitor's native specs due to display scaling.
What This Tool Shows
- Screen resolution (width × height)
- Browser viewport size
- Device pixel ratio (scaling factor)
- Orientation and color depth
Why This Matters
Screen resolution is useful for debugging layout issues, testing responsive designs, and understanding why websites look different across devices. It's also one of the signals used in browser fingerprinting — combined with data from your IP address and other browser properties, it can help identify your device.
Privacy Note
Screen resolution alone isn't very revealing, but when combined with other browser attributes it contributes to a unique fingerprint. This tool shows you what websites can see. We don't store, track, or log any of your data.