User agent string

Runs locally with heuristic parsing. Results may vary for unusual strings.

Parsed details

Browser

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Browser version

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Operating system

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OS version

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Engine

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Device type

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Common ways to use User Agent Parser:

Quick browser identification
Check which browser and version a pasted user agent string belongs to without installing a separate debugging tool.
Input validation before sharing
Confirm that a copied user agent string is complete before pasting it into a ticket, email, or bug report.
Workflow debugging
Compare how different user agent strings map to browsers, operating systems, and engines while troubleshooting an issue.
Result sharing
Copy a concise summary or export the full JSON output to share reproducible environment details with teammates.
Mobile triage
Inspect user agent strings on a phone or tablet when you need to verify a report away from your desktop.

How do I use this app?: Paste a user agent string into the input, or use Use my UA to load your current browser string. Review the parsed details, then copy the summary, copy the JSON, or export the JSON file if you need to share it.
Is this app free to use?: Yes. User Agent Parser is free to use and does not require an account.
What happens to my input data?: The parser works locally in your browser. The tool does not store the user agent strings you paste into it.
Why am I getting an error or unexpected output?: Short, incomplete, or unusual user agent strings may not contain enough information to identify every field. Paste the full string and remember that spoofed values can still produce approximate results.
Where can I find instructions and troubleshooting tips?: Open the in-app Help panel for setup steps, parsing notes, privacy guidance, and keyboard help. The panel also closes with Escape for keyboard users.