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User-Agent Analyzer

API & Web

Analyze User-Agent strings and generate testing values.

User-Agent
Identify browser, OS, engine, and device type

Use cases

When to use User-Agent Analyzer

Analyze User-Agent strings and generate testing values.

1Inspect a UA captured from an access log
2Compare browser compatibility in different environments
3Generate a test User-Agent header
4Parse URLs, run XPath queries, and inspect HTTP status codes
5Build minimal reproducible HTTP requests for frontend/backend debugging
6Review error codes and API compatibility before release

Guidance

Get reliable results

  1. 1UA strings can be spoofed and are not an authentication signal
  2. 2Use capability detection for application behavior
  3. 3Treat parsed device and OS hints as best-effort
String-based UA parsing cannot prove the actual browser, device, bot status, or user identity.

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