User Agent Parser
User Agent string
Parsing is done client-side with ua-parser-js. No data is sent to a server.
Parsed result (JSON)
How to use
- Paste the raw user-agent string from logs or request headers.
- Inspect browser, OS, and device fields separately before drawing compatibility conclusions.
- Combine parser output with feature detection in frontend logic for better reliability.
FAQ
What is user agent parser used for?
User Agent Parser helps teams parse user-agent strings into browser, OS, and device info with faster and more reliable results.
Is my data uploaded?
No. Processing runs locally in your browser.
Does this tool support practical production workflows?
Yes. It is designed for real usage in debugging, content preparation, and release checks.
Introduction
A user agent parser tool helps teams parse user-agent strings into browser, OS, and device info while reducing manual mistakes during implementation and review.
What is user agent parser?
User Agent Parser is designed to parse user-agent strings into browser, OS, and device info with consistent browser-based processing.
It is most useful when teams need quick validation before committing changes to production workflows.
Clear, deterministic output also improves collaboration across development, QA, and content teams.
Key Features
Focused input and output handling reduces avoidable formatting errors.
Fast local execution shortens debugging loops and protects sensitive data.
Reusable output supports documentation, testing, and integration tasks.
Common Use Cases
- Analyzing browser support issues from raw logs.
- Segmenting traffic by device class for QA.
- Creating reliable fixtures and repeatable checks for day-to-day operations.
Best Practices
- Combine parser output with feature detection for reliability.
- Keep representative test samples so future changes can be verified quickly.
- Document assumptions behind output interpretation to avoid team confusion.