User-Agent parser
Parse a User-Agent string locally to detect its browser, rendering engine, operating system, device type and known bots.
- 100% local
- Instant
- Free
- No account
- Works offline
- Clipboard
Why use this tool?
Parse a User-Agent string to identify its browser, rendering engine, operating system, device type and selected bots without sending it to a server.
100% local and secure
Your data stays on your device and is never sent to our servers.
Smart processing
Create and verify web content with settings designed for usable results.
Supported formats
Web formats, metadata, and structured content depending on the available features.
Save time
Get a clean, ready-to-use result in seconds without installing software or configuring a complex workflow.
Guide
How to use this tool
- 1
Paste the string
Use a value from HTTP logs or your browser.
- 2
Run the parser
The tool applies local detection rules and displays the recognised information.
- 3
Review the result
Copy the JSON or compare it with the real request context.
Tips and best practices
- A User-Agent can be modified or spoofed.
- Detection remains indicative, especially for recent devices.
- Do not make security decisions based solely on a User-Agent.
Frequently asked questions
Does a User-Agent precisely identify a device?
No. It provides clues but is neither reliable nor unique.
Why are Windows 10 and 11 grouped together?
Modern browsers generally expose the same Windows NT version for both systems.
Is the string uploaded?
No. Parsing is entirely local.
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