Frequently Asked Questions
What does the parser detect?
It identifies likely browser, operating system, and device hints from the User-Agent string.
Is detection always exact?
No. User-Agent strings can be spoofed, so output should be treated as best-effort parsing.
Is User-Agent data uploaded?
No. Parsing happens locally in your browser.
Example input/output
Input: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36
Output: Browser: Chrome 120 / OS: Windows 10 / Device: Desktop
How it works
This tool applies regular expressions to the User-Agent string to extract browser name/version, operating system name/version, and device category. Processing runs in your browser.
Common use cases
- Identify browser, OS, and device type from a User-Agent string in server logs
- Debug compatibility issues by inspecting User-Agent values
- Parse User-Agent headers from HTTP access logs for analytics