Network, Internet
Check User Agent
Check your current User-Agent and estimated browser, OS and device details, or analyze another User-Agent string.
Your User-Agent
This is the User-Agent header sent with the request for this page.
Current User-Agent analysis
Browser version
OS
Device
Rendering engine
Mobile
These results are estimates. Reduced or modified User-Agent strings can differ from the actual environment.
User-Agent Client Hints
Information supplied by supported browsers. Some values may be unavailable because of browser settings.
Enable JavaScript to display this information.
Brands
Platform
Platform version
Architecture
Bitness
Device model
Mobile
Full versions
HTTP request information
User-Agent
Accept-Language
Show more HTTP headers
Accept-Encoding
Sec-CH-UA
Sec-CH-UA-Mobile
Sec-CH-UA-Platform
Browser environment
Enable JavaScript to display this information.
Screen size
Viewport
Device pixel ratio
Language
Time zone
Touch support
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Analyze a User-Agent
Enter another User-Agent string to see estimated details.
Entered User-Agent analysis
Entered User-Agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:156.0) Gecko/20100101 Firefox/156.0
Browser
Browser version
OS
Device
Rendering engine
Mobile
Browse representative User-Agents
How to use this User-Agent checker
Open this page to view the User-Agent sent with your request and estimated browser, OS and device details. Enter a different string above to analyze another User-Agent.
Key terms
What is a User-Agent?
A string a browser or other client sends to a website. It can provide clues about the browser and operating system.
What are User-Agent Client Hints?
Browser and device information made available by supported browsers, including through JavaScript. Available fields depend on the environment.
Why is some User-Agent information missing?
Browsers may freeze or omit parts of the User-Agent to protect privacy.
Frequently asked questions
Can a User-Agent identify my browser?
Often, but a modified or reduced string may prevent an accurate identification.
Why does Windows 11 show Windows NT 10.0?
Windows 11 may use the same User-Agent token. The string alone cannot reliably distinguish Windows 10 and 11.
Can a User-Agent identify the exact device model?
A model may be present, but it is often omitted, so an exact identification is not reliable.
Why are Client Hints unavailable?
The browser may not support them or may restrict access. The User-Agent and request headers remain visible.
Can I change my User-Agent?
Some browsers offer developer tools or extensions to change it. This does not change the browser's actual capabilities.