⚡ Website Tool
User Agent Parser
Parse user agent strings to identify likely browser, operating system, device type, and bot-like signals.
Interactive Tool
Use User Agent Parser
How to use User Agent Parser
- Paste a user agent string from logs, analytics, headers, or a support ticket.
- Run the parser and review the browser, OS, device, and crawler hints.
- Use the result as a debugging aid rather than a perfect fingerprint.
Why use User Agent Parser
User agent strings are messy because browsers include compatibility tokens, old names, and sometimes misleading values. Parsing them helps support teams and developers understand what kind of client made a request.
The result is best used for triage, analytics review, and display decisions. Modern browsers reduce some identifying details, and bots can fake user agents, so high-risk decisions should not depend on this field alone.
Best for User Agent Parser
- Reading browser details from server logs.
- Checking whether a request looks mobile, desktop, or bot-like.
- Debugging browser-specific support reports.
Practical notes
- User agents can be spoofed.
- Use feature detection for front-end behavior when possible.
- Compare with client hints if your stack collects them.