User Agent Parser
Parse and analyze any user agent string to identify browser, OS, device, and more
User Agent String
Your current user agent is auto-detected. You can also paste a custom one.
Analyze any user agent string to identify the browser, operating system, device type, and rendering engine. Automatically detects your current browser's user agent or lets you paste any UA string for analysis. Useful for web development, testing, and analytics debugging.
Key Features
- ✓Automatic current browser UA detection
- ✓Browser name and version identification
- ✓Operating system and version detection
- ✓Device type classification (desktop, mobile, tablet, bot)
- ✓Rendering engine identification
- ✓Custom UA string parsing
How to User Agent Analyzer
- 1
View your user agent
Your browser's user agent is detected automatically.
- 2
Or paste a UA string
Enter any user agent string to analyze.
- 3
See parsed details
View browser, OS, device, and engine information.
Common Use Cases
- •Debugging browser-specific CSS or JavaScript issues
- •Verifying bot user agents for crawl analysis
- •Testing user agent detection logic
- •Analytics troubleshooting — verifying UA parsing accuracy
Frequently Asked Questions
What is a user agent string?▼
A user agent string is sent by your browser with every HTTP request. It identifies your browser, version, operating system, and device. Websites use it to serve appropriate content.
Can user agent strings be spoofed?▼
Yes. Browsers allow changing the user agent through developer tools or extensions. This is why user agent detection is not reliable for security purposes.