User-Agent Parser
Decode user-agent strings into browser, engine, operating system, and device type — entirely in your browser.
Processed locally in your browser — nothing is uploaded.
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About User-Agent Parser
Paste any User-Agent header and see which browser, version, engine, operating system, and device class it claims to be. Common bots and crawlers are detected too. Your own browser's user agent is one click away.
Common uses
- Debug user-agent based feature gating or logging
- Identify which client produced a log line
- Check whether a request came from a known crawler
Limitations
- User-agent strings are self-reported and easily spoofed — treat results as claims, not facts
- Modern browsers freeze parts of the UA string, so OS versions may be inexact