Can a User-Agent value be trusted?

A User-Agent value can be easily changed by the client. You should not rely on it alone for critical security decisions.

Does it detect mobile devices correctly?

Yes. The tool distinguishes iPhone, iPad, Android devices, and Windows/macOS desktop from each other.

Does this tool replace server-side UA parsing libraries?

It is excellent for development and debugging; however, for a high-volume production environment, you are advised to use a server-side library.

Is User-Agent information considered personal data under KVKK?

This tool does not replace professional legal advice. When combined with an IP address, UA data may fall within the scope of personal data; you should get expert advice.

User-Agent Parser - Decode Any Browser

💡 Your browser UA loaded automatically. Paste another to test it.

Example User-Agents (try with one click)

💡 Usage

Web developer: Server log analysis, traffic source parsing.
QA: Parse the UA from a bug report.
Analytics: A GA/Mixpanel UA-parse alternative.
Bot detection: Separate UAs containing “bot”, “crawler”, “spider” (basic).
Limitation: Spoofed UAs are not detected — a user can change their UA.

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📖 How to Use

Upload document

Drag-drop or pick file.

Set options

Choose operation and parameters.

Process

Server runs the task.

Download

Get result in your format.

Frequently asked questions

Due to historical compatibility, all modern browsers use the Mozilla/5.0 prefix and carry different engine information in the same string; this makes it hard to read.

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User-Agent Parser