User Agent Parser
Parse any User-Agent string to identify the browser, operating system, and device type.
How to Use
- Your current browser's User-Agent is shown automatically — or paste a different one to analyze.
- View the parsed breakdown: browser, version, OS, device type, and engine.
- Use this to debug device-specific issues or verify analytics data.
Frequently Asked Questions
QWhy would I need to parse a User-Agent string?
Common uses include debugging device-specific bugs, verifying analytics/log data, building responsive feature detection, and understanding bot/crawler requests.
QIs User-Agent parsing 100% reliable?
No — User-Agent strings can be spoofed or are increasingly frozen/generalized by browsers (User-Agent Reduction in Chrome) for privacy reasons. Treat results as a best-effort guide, not ground truth.
QDoes this tool send my User-Agent to a server?
No — all parsing happens client-side using pattern matching in JavaScript.
About This Tool
User-Agent strings follow a loosely standardized but inconsistent format across browsers and devices. This parser uses common regex patterns to identify the most popular browsers, OSes, and device types.