User Agent
Inspect browser and display information.
The user-agent string is a line of text your browser sends with every request, describing itself and its platform. This shows yours verbatim, plus the screen and platform values your browser exposes to pages.
Your input
Private, browser-based processingResults
Ready when you are
Enter your details above and run the tool.
How User Agent works
What it does
Inspect browser and display information.
What you get
The user-agent string and display information your browser provides.
On your device
Your input is processed in this browser. Copy or download the result when you are ready.
What if a check cannot finish?
Confirm your input and try again. A timeout, blocked request, or unavailable provider is not proof that a domain is broken. Internet measurements and third-party services have limits.
User Agent — frequently asked questions
Why does my user agent mention browsers I do not use?
Historical compatibility. Nearly every user agent still claims Mozilla/5.0 and often Safari and Chrome, because sites once sniffed for them. The strings are largely legacy fiction.
Can a user agent be changed?
Easily — browsers expose it in developer tools and any HTTP client can set it freely. Never rely on it for a security decision.
Is the user agent going away?
It is being frozen and reduced to limit fingerprinting. Chromium is moving to Client Hints, where a site must explicitly request the details it needs.