What Is My User Agent?
See your browser's user agent string with parsed details including browser name, version, OS, and device type. Free, no signup required.
Detecting your user agent...
How it works
Enter your data
Fill in the form fields or paste your content to get started.
Processed in your browser
Everything runs client-side — your data never leaves your machine.
Copy or download results
Get instant results you can copy to clipboard or download.
Features
Instant Detection
User agent is parsed and displayed immediately on page load.
Detailed Parsing
Browser name, version, rendering engine, OS, and device type.
Browser Properties
Shows language, cookies, hardware concurrency, and touch support.
Copy Raw String
Copy the full user agent string with one click.
No Signup
Completely free, no account needed.
Test with API
Use different user agents with our Screenshot API for testing.
Frequently asked questions
What is a user agent?
A user agent is a string of text your browser sends to websites identifying itself. It includes your browser name, version, operating system, and device type.
Why do websites check user agents?
Websites use user agents to serve optimized content for different browsers and devices, detect bots, and collect analytics about visitor technology.
Can I change my user agent?
Yes, most browsers allow you to change your user agent through developer tools or extensions. Our Screenshot API also lets you specify custom user agents for captures.
What does our Screenshot API's user agent look like?
Our API uses a modern Chrome user agent by default, but you can specify any custom user agent when making screenshot requests. This is useful for testing responsive designs.
Why are user agent strings so long?
User agent strings grew long due to browser compatibility wars. Browsers added other browsers' identifiers to avoid being blocked by sites checking user agents. This is a historical artifact.
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Use cases
Browser Testing
Verify which browser and version is being detected when testing web applications.
Bot Detection
Understand what user agent string your browser sends to help configure bot detection rules.
Responsive Testing
Check device type detection when testing responsive designs across different browsers.