User-Agent Checker
Analyze your browser's user agent string and get detailed device information
Your Current User Agent
Analyze Custom User Agent
User Agent Analysis
Browser Information
Browser:
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Version:
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Engine:
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Engine Version:
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Operating System
OS:
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Version:
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Architecture:
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Platform:
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Device Information
Device Type:
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Vendor:
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Model:
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Touch Support:
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Screen & Features
Screen Resolution:
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Color Depth:
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Timezone:
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Language:
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User Agent Breakdown
Product Information
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System Information
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Extensions & Plugins
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About User Agent Strings
A User Agent string is a text string that web browsers send to websites to identify themselves. It contains information about the browser, operating system, device, and other capabilities.
User Agent Format
User Agent strings typically follow this pattern:
Mozilla/5.0 (Platform; Security; OS-or-CPU; Localization) Gecko/GeckoDate ProductName/ProductVersion
Common Uses
- Content Adaptation: Serve different content for mobile vs desktop
- Feature Detection: Enable/disable features based on browser capabilities
- Analytics: Track browser and device usage statistics
- Security: Block or allow access based on browser type
- Debugging: Identify browser-specific issues
Privacy Considerations
User Agent strings can be used for browser fingerprinting. Modern browsers are working to reduce the amount of identifying information in User Agent strings to improve user privacy.