My User Agent
Instantly detect and analyse your browser's user agent string. Identifies browser, OS, device type, rendering engine, architecture and supported web features.
✅ Auto-detect 🔍 Full Parse 🔌 Feature Flags 🔒 Private
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My User Agent🔍
Full UA Parse
Browser, OS, device type, engine and architecture all extracted.
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Feature Flags
Detects cookies, WebAssembly, geolocation, touch and more.
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Auto-detect
Reads your user agent instantly on page load — no input needed.
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Private
All detection uses the browser's navigator API. Nothing sent anywhere.
⭐ User Reviews
A
Alex T.
Yesterday
⭐⭐⭐⭐⭐
Loads instantly and shows exactly what I needed. No ads, no sign-up. This is bookmarked permanently.
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Sara K.
2 days ago
⭐⭐⭐⭐⭐
Clean, accurate and fast. The copy buttons save so much time — I use this in my daily dev workflow.
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Dan M.
1 week ago
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Best version of this tool I've found. The breakdown is thorough and easy to read even for non-technical users.
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Laura B.
2 weeks ago
⭐⭐⭐⭐⭐
Incredibly useful. The information shown here helped me debug a browser compatibility issue in minutes.
Web Tools📖 How to Use
1
Load the page
Your user agent is detected automatically when the page loads.
2
Read the breakdown
Browser, OS, engine, device type and architecture all parsed.
3
Check feature flags
Badges show which browser features are enabled or disabled.
4
Copy your UA
Click Copy Full UA to get the complete user agent string.
🎯 Related Tools
❓ FAQ
What is a user agent string?+
A user agent string is a text identifier sent by your browser with every HTTP request. It tells websites what browser, OS, and device you're using. Servers use it for content negotiation and compatibility decisions.
Can I change my user agent?+
Yes. Chrome DevTools (F12 → Network → Network conditions) lets you override your UA. Browser extensions like "User-Agent Switcher" also work. This is useful for testing how sites respond to different browsers.
Do websites track me using my user agent?+
The UA string is sent with every request and is part of your browser fingerprint. Combined with other signals (screen resolution, plugins, timezone), it can help identify you even without cookies.
What does "Mozilla/5.0" mean in every UA string?+
It's a historical artefact. Netscape's browser was "Mozilla" and early web servers gave enhanced content to Mozilla. All major browsers adopted the prefix for compatibility, even though they're not Netscape.
What is the difference between a mobile and desktop user agent?+
Mobile UAs include identifiers like "Mobile", "Android", "iPhone" or "iPad". Desktop UAs include "Windows NT", "Macintosh" or "Linux x86_64". Responsive websites use UA detection or CSS media queries to serve appropriate layouts.