Screen Resolution & Viewport Tester

Free online viewport resolution tester. Inspect CSS viewport dimensions, device pixel ratio, and screen orientation in real time.

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Result Output

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Status: Ready⚡ Instant Client Calc

How Screen Resolution & Viewport Tester Works

Free online viewport resolution tester. Inspect CSS viewport dimensions, device pixel ratio, and screen orientation in real time. OmniDeck processes this tool using 🔒 Processed locally — window object properties..

Frequently Asked Questions

What is Device Pixel Ratio (DPR)?

DPR is the ratio between physical display pixels and CSS logical pixels (e.g. Retina displays have DPR 2 or 3).

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