What is it?
What Is My User Agent shows your browser’s user-agent string, its name and version, operating system and screen size, and can read any other user-agent string.
Who is it for?
Support teams asking users for browser details, developers debugging device-specific bugs, and analysts reading server logs.
How to use it
- Your own details appear at once. Tap Copy to send them to a support team.
- To read another one, use Check another user agent: paste a user-agent string from a log file or analytics. Try a sample shows an example.
Why user agents look strange
Almost every browser starts with “Mozilla/5.0” and mentions Safari and Chrome, for historical compatibility. The real browser is found from the later parts, like Edg/ for Edge or SamsungBrowser/.
Limits
- Browsers now reduce the detail they share (for example, Chrome freezes some version and OS numbers), so exact versions may be approximate.
- User agents can be changed or faked, so don’t rely on them for security.
- Bots like Googlebot identify themselves in the user agent; verify real Googlebot by reverse DNS, not the string alone.
When support asks for it
Copy the result into your message: it tells them your browser, version and device, which helps fix problems faster.
Examples
- A string containing
Android 14andChrome/1xxis Chrome on an Android phone. iPhone; CPU iPhone OS 17_…withSafariis Safari on an iPhone (CriOS means Chrome on iPhone).Googlebotin the string means Google’s crawler;facebookexternalhitis Facebook making a link preview.
Why it’s useful
If a page breaks only for some visitors, comparing their user agents in your analytics often reveals one browser or old phone model.
Open the tool: What Is My User Agent
Still stuck?
Contact support. Tell us which tool or page you were using, what you tapped, what you saw, and your phone or computer and browser (for example: Android phone, Chrome). We reply by email.
Questions, or an error not listed here?
Tell us in the comments: what you were doing, the exact message you saw, and your device and browser. We read every comment and add new fixes to this article.