User Agent Parser

The User Agent Parser extracts basic browser, OS, and device information from a user‑agent string. Paste any UA or load your current browser’s UA and inspect the parsed result as JSON.

This is handy for debugging server logs, reproducing issues, or understanding how different clients identify themselves.

Key features

• Detects common browsers (Chrome, Firefox, Safari, Edge)
• Detects OS signatures (Windows, macOS, iOS, Android)
• Classifies device type (Desktop vs Mobile)
• Copy parsed JSON output

Common use cases

• Inspecting logs to classify clients
• Reproducing browser‑specific issues
• Verifying UA spoofing behaviors

Privacy & security: runs locally in your browser; no UA data is uploaded.

1. Paste a UA string or use “Sample” to load a demo value.
2. Enable “Autofill with current UA” to load your browser’s string.
3. Review parsed fields: browser, version, OS, and device.
4. Click “Copy Output” to copy the parsed JSON.

Tips

• UA formats vary; detection uses best‑effort patterns.
• For strict parsing, prefer dedicated libraries server‑side.

Troubleshooting

• Unknown browser → It may be a niche UA; result falls back to nulls.
• Wrong device classification → Mobile desktop modes can spoof desktop UAs.