User Agent Parser
See what is my user agent — or parse any UA string.
Detecting…Parsing runs entirely in your browser — no user-agent string is ever sent to a server.
How to use the User Agent Parser
- 1 Your own browser’s user agent is parsed automatically on load.
- 2 Paste any other user-agent string into the box to parse it instead.
- 3 Read the browser, rendering engine, OS and device details, and copy the raw string.
Examples
- ▸ Checking "what is my user agent" for a bug report.
- ▸ Parsing a UA string from server logs to identify the visitor’s browser and device.
Frequently asked questions
What is a user agent string?
It is a short piece of text every browser sends with each request, identifying the browser, its version, the rendering engine, and the operating system — sites use it for compatibility and analytics.
What is my user agent?
This tool shows it automatically as soon as the page loads, using your browser’s own navigator.userAgent value — no need to search for it elsewhere.
Why do two browsers on the same device show different device info?
User agent strings are self-reported by the browser and can be incomplete or spoofed (for example, in "desktop site" mode), so device detection is a best-effort guess, not a guarantee.
Is the string I paste sent anywhere?
No. Parsing runs entirely in your browser with a local library, so any user-agent string you paste never leaves your device.