User Agent Analyzer

Browser

Operating System

Device Type

Engine

Is Mobile?

Is Bot/Crawler?

Language

Raw Info

What is a User Agent?

A User Agent (UA) is a specific string of text that your browser sends to the server with every HTTP request header. It contains information about your browser name, version, operating system, device type, and rendering engine. Servers use this to determine if you are on a desktop or mobile device and serve the appropriate page layout.

Common Scenarios

Web Development

Frontend developers check if the UA string matches expectations to debug cross-browser compatibility issues.

Bot Detection

Analyze server logs to identify malicious crawlers or bots pretending to be legitimate browsers.

Device Targeting

Determine if a user is on Android or iOS to provide the correct App Store download link.

FAQ

Is the User Agent unique?
No. Thousands of users can have the exact same browser version and OS, resulting in an identical UA string. It cannot be used to uniquely identify a person.
Can I change my User Agent?
Yes. Most modern browsers (like Chrome, Firefox) allow developers to customize the User-Agent via Developer Tools (F12) to simulate different devices.
Why does Chrome say "Safari"?
This is for historical compatibility. Early websites only worked with Netscape or Safari. Later browsers (like Chrome) included keywords from other browsers in their UA to ensure those sites rendered correctly.
Does this tool upload my data?
No. All parsing logic runs locally in your browser (client-side). We do not collect or store any of your data.
How to check my Android version?
Visit this page on your Android device and check the "Operating System" box. It usually displays "Android X.X".
What is Mozilla/5.0?
It was originally the codename for the Netscape browser. Now, almost all browsers start their UA string with it to maintain historical compatibility with old websites.
How to detect Mobile vs Desktop?
Mobile browser UAs typically contain keywords like "Mobile", "Android", or "iPhone". This tool automatically detects this and displays it in "Device Type".
Difference between iOS and macOS UA?
iOS UAs generally include "iPhone" or "iPad" and "Mobile", whereas macOS UAs include "Macintosh" and lack "Mobile".

More Free Tools

URL Encoder/Decoder

Online URL Encode and Decode tool. Fix broken parameter characters. UTF-8 supported.

JWT Decoder

Decode JSON Web Tokens (JWT) online. Parse Header and Payload.

JSON Formatter

Pretty print, minify, and validate JSON data online with syntax highlighting.

Unix Timestamp Converter

Convert between Unix timestamps and human-readable dates. Supports seconds & milliseconds.

Curl to Code

Convert Curl commands to Python, JavaScript, PHP, Go code instantly. Essential for API debugging.

HTML ↔ Markdown

Bidirectional conversion between HTML and Markdown. Real-time preview and clean formatting.