User Agent Parser
Parse and analyze user agent strings to identify browsers, OS, and devices
How to use
- Paste a user agent string in the textarea
- Click "Parse User Agent" to extract information
- Or click "Use Current UA" to parse your browser user agent
- View detailed information about browser, OS, device, and engine
- Click "Copy JSON" to copy the parsed results
What is a User Agent Parser?
A user agent parser extracts information from user agent strings to identify browsers, operating systems, devices, and rendering engines. User agent strings are sent by browsers with every HTTP request and contain details about the client environment. Parsing user agents helps developers understand user environments and debug compatibility issues.
Why Parse User Agent Strings?
User agent parsing is essential for web development:
- Browser Detection: Identify which browsers users are using
- OS Detection: Determine operating systems (Windows, macOS, Linux, iOS, Android)
- Device Detection: Identify device types (desktop, mobile, tablet)
- Debugging: Debug browser-specific compatibility issues
- Analytics: Understand user environment distribution
Common Use Cases
Browser Compatibility Debugging
Parse user agent strings to identify browsers causing compatibility issues. Essential for debugging CSS, JavaScript, or feature support problems.
User Environment Analysis
Analyze user agent strings to understand your audience's browser and OS distribution. Helps prioritize browser support and feature development.
Device Detection
Identify device types from user agent strings. Useful for responsive design testing and mobile-specific feature detection.
Analytics and Reporting
Parse user agent strings for analytics and reporting. Understand browser market share, OS distribution, and device types among your users.
Feature Detection
Use parsed user agent information to detect browser capabilities. Helps implement browser-specific features or workarounds.
User Agent String Structure
User agent strings typically contain:
- Browser Name: Chrome, Firefox, Safari, Edge, etc.
- Browser Version: Version number of the browser
- Operating System: Windows, macOS, Linux, iOS, Android
- OS Version: Operating system version
- Device Type: Desktop, mobile, tablet
- Rendering Engine: WebKit, Gecko, Blink, etc.
Parsed Information
Our parser extracts:
- Browser: Browser name and version
- Operating System: OS name and version
- Device Type: Desktop, mobile, or tablet
- Rendering Engine: Browser engine (WebKit, Gecko, Blink)
- Device Model: Mobile device model (if available)
- Complete Breakdown: Detailed JSON output with all parsed data
User Agent Parsing Best Practices
- Don't Rely Solely on UA: User agent strings can be spoofed or modified
- Feature Detection: Prefer feature detection over user agent parsing when possible
- Regular Updates: User agent strings change frequently—keep parsers updated
- Privacy Considerations: Be mindful of privacy when collecting user agent data
- Server-Side Parsing: Parse user agents server-side for better performance
Common User Agent Examples
- Chrome Desktop: "Mozilla/5.0 (Windows NT 10.0; Win64; x64) Chrome/120.0.0.0"
- Safari iOS: "Mozilla/5.0 (iPhone; CPU iPhone OS 17_0 like Mac OS X) Safari/605.1.15"
- Firefox Desktop: "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:121.0) Gecko/20100101 Firefox/121.0"
Privacy and Security
Our User Agent Parser processes all user agent strings entirely in your browser. No data is sent to our servers, ensuring complete privacy.
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