Browser Info Detector
Show details about your browser, OS and screen.
About the Browser Info Detector
Reports information your browser exposes about itself: user agent, platform, language, screen size, and whether cookies and online status are enabled. Everything stays on your device.
How to use
Click Detect to read your browser details.
Worked example
Reports e.g. Chrome on Windows, English, 1920×1080 screen.
How to use this calculator
- Open the Browser Info Detector tool in your browser.
- Allow the page to read basic browser and device information if prompted.
- Review the displayed details for your browser, operating system, device type, and screen size.
Step by step method
- Load the tool on the device you want to check.
- Wait a moment for the browser information to appear on the page.
- Read the listed values for browser name, operating system, and screen details.
- Use the information to confirm how the current device is being detected.
Worked example
For example, if you want to check what a website sees on your laptop, the tool will show the browser and screen details it detects.
- Open the tool on your laptop.
- Look at the detected browser name, such as Chrome or Firefox, and note the operating system shown, such as Windows or macOS.
- Check the screen section to see the display width and height reported by the browser.
Answer. The tool shows the browser, operating system, and screen information for that laptop.
Tips and common mistakes
- Refresh the page if the information does not appear right away.
- Check the same page on different devices if you want to compare results.
- Remember that browser detection can sometimes vary slightly depending on settings or privacy features.
- Use the screen size information as a quick check, not as a detailed hardware report.
Frequently asked questions
Is any of this sent anywhere?+
No, it is read locally and shown only to you.
Why does the user agent look complex?+
For historical compatibility reasons browsers include many legacy tokens.
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