User Agent Parser
Parse User-Agent strings online instantly. Detect browser, operating system, device type and rendering engine from User-Agent headers.
Last updated: May 2026
Free Online User Agent Parser
Use this free online user agent parser tool directly in your browser without installing software. Fast, mobile friendly and easy to use.
User Agent Parser
About User-Agent Parsing
User-Agent parsers help developers analyze browser compatibility, device usage and request metadata from HTTP headers.
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About This Tool
About User Agent Parser
This free online User Agent Parser helps you analyze User-Agent strings instantly.
Detect browser, operating system, rendering engine and device information from HTTP User-Agent headers.
What This Tool Supports
- Browser detection
- Operating system detection
- Device type analysis
- Rendering engine parsing
- User-Agent inspection
Frequently Asked Questions
What is a User-Agent string?
A User-Agent string identifies the browser, operating system and device making an HTTP request.
Can this detect mobile devices?
Yes. Mobile, tablet and desktop devices are detected.
Why parse User-Agent strings?
User-Agent parsing helps with analytics, debugging and browser compatibility testing.
Is this User Agent Parser free?
Yes. This tool is completely free to use online.
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