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Device Information & Browser Detector

Detect detailed information about your current device and browser: screen resolution, device pixel ratio, viewport size, operating system, browser name and version, user agent string, touch support, and network connection type.

How to Use

  1. Step 1: Open the tool - your device information is detected automatically.
  2. Step 2: Review screen resolution, pixel ratio, OS, browser, and connection details.
  3. Step 3: Click any value to copy it.

Frequently Asked Questions

What information is shown?

The tool shows screen resolution, viewport size, pixel ratio, color depth, browser name and version, operating system, language, and online/offline status.

Is this information sent to a server?

No. All information is read from your browser JavaScript APIs locally. Nothing is transmitted.

Why do different websites detect different device info?

Sites use different detection methods. Screen resolution and UA are accurate, but device model is usually inferred from UA strings. Modern browsers add noise to fingerprinting APIs (like canvas) for privacy, causing minor variations between sites.

How do websites use device information to provide adaptive experiences?

Responsive design adjusts layouts based on viewport width; device pixel ratio (DPR) enables 1x/2x/3x images via srcset; UA detection can distinguish mobile vs. desktop features (e.g., touch support); connection speed info can be used to serve lower-quality images to save bandwidth. Modern best practice is feature detection rather than UA sniffing — more reliable and future-proof.