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My User-Agent
The text your browser sends to websites, and what it reveals.
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
What we detected
| Browser | unknown |
|---|---|
| System | unknown |
| Device | bot |
| Screen | — |
| Language | — |
| Time zone | — |
| Cookies | — |
| JavaScript | disabled |
Related tools
What the user-agent is
The user-agent is a piece of text your browser sends on every visit to say what it is: the browser name and version, the operating system and sometimes the type of device. Websites use it to adapt pages, build statistics and troubleshoot problems. The full text appears above, exactly as it reached our server.
How to read the result
The user-agent has an old, confusing format: almost every browser starts with Mozilla/5.0 and mentions other browsers for compatibility. Edge, for example, also claims to be Chrome and Safari. That is why we show a simplified reading next to it with the browser and system we identified.
Modern browsers are trimming user-agent details for privacy. Chrome, for example, reports only the major version and shows "Windows NT 10.0" for both Windows 10 and Windows 11.
When this is useful
- Telling tech support which browser and version you use.
- Checking whether an extension or your phone's "desktop site" mode changed the user-agent.
- Testing whether a website serves the right version for phones or computers.
Frequently asked questions
What is a user-agent?
It is the text your browser sends to websites to identify itself, with its name, version and operating system.
Why does my Windows 11 show up as Windows 10?
Browsers keep the same text, Windows NT 10.0, for both versions. The user-agent alone cannot tell them apart.
Can I change my user-agent?
Yes. Browser developer tools and some extensions let you pretend to be another browser or device, which is handy for testing.
Does the user-agent identify who I am?
Not on its own. It is the same for millions of people with the same browser and system, but combined with other data it can help tell visitors apart.