What's My Browser? User-Agent Parser
See your browser, OS, screen size, time zone and language — or paste any user-agent string to decode it.
Result
How to use
- 1
Open the page to see your own browser, OS, screen and time-zone details.
- 2
Paste any user-agent string (from logs or analytics) to decode it.
- 3
Copy the details when reporting a bug.
Questions
What is a user-agent?
A short text every browser sends with each request, naming the browser, its version and the operating system. Websites use it for statistics and compatibility.
Why does it say Windows 10 on my Windows 11 PC?
Browsers froze the user-agent at “Windows NT 10.0” for both versions. Chrome and Edge reveal Windows 11 only through client hints, which this page reads when available. Similarly macOS is always reported as 10.15.7.
Is this information sent anywhere?
No. All the details are read by your browser on this page with JavaScript; nothing is uploaded or logged.
About this User Agent tool
What's My Browser? User-Agent Parser — See your browser, OS, screen size, time zone and language — or paste any user-agent string to decode it. It is one of 200 free tools on namasivayam.in, made by software engineer Namasivayam Vadivelan for everyday use in India.
Everything is calculated instantly in your browser: nothing you type or upload is sent to any server, there is no sign-up, and it works on mobile and desktop. Open the page to see your own browser, OS, screen and time-zone details.
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Results are estimates to help you plan. They are not financial, tax or medical advice.