What Is My User Agent?

Instantly find and understand your browser's User Agent.

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What Is My User Agent?
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Parsed Details

Browser

Operating System

Rendering Engine

Device

CPU Architecture

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About the User Agent Tool

Every time your web browser connects to a website, it sends a piece of text called a "User Agent" (UA). This string acts like an ID card for your browser, telling the website what kind of software you're using. It includes details like your browser name and version, your operating system, and the rendering engine.

We created this tool because while the UA string is useful, it can be long and difficult to read. Our tool instantly shows you your exact user agent and, more importantly, parses it into a clean, human-readable format. This makes it easy for developers, tech support, and curious users to see exactly what their browser is reporting about their system. No clicks are needed—your information is displayed the moment you load the page.

Why is a User Agent important?

  • Content Delivery: Websites can use the UA to serve different content to different devices. For example, a site might show a mobile-optimized version to a phone or a desktop version to a laptop.
  • Debugging: Developers use the User Agent to identify and fix bugs that only appear on specific browsers or operating systems.
  • Analytics: Website owners use this data to understand what technology their visitors are using, helping them decide which browsers and devices to prioritize during development.

Frequently Asked Questions (FAQ)

What is a User Agent (UA) string?

A User Agent string is a line of text that your browser sends to every website you visit. It identifies your browser (e.g., Chrome, Firefox), its version number, your operating system (e.g., Windows 10, macOS), and other details about your system's technology.

Is my User Agent information private?

Your User Agent string does not contain personally identifiable information like your name or email address. However, it is a key part of your browser's "fingerprint" and can be used by websites, along with other data points, to track your activity. It is sent with every request you make on the web.

Can I change my User Agent?

Yes, it is possible to change your User Agent string using browser extensions or developer tools. This is often done by web developers to test how their site will look and function on different devices and browsers. However, changing it can sometimes cause websites to not display correctly.

Why does my User Agent string contain other browser names like "Mozilla" or "AppleWebKit"?

This is for historical reasons related to compatibility. Many years ago, websites would check for "Mozilla" in the user agent to serve modern features. To avoid being locked out, other browsers like Chrome, Edge, and Safari started including these keywords in their own user agent strings to signal that they were also compatible.

How does this tool parse the User Agent string?

Our tool uses the popular and well-maintained 'ua-parser-js' library. This library contains a comprehensive set of rules to accurately identify and extract details from thousands of different User Agent strings, ensuring the information you see is reliable and up-to-date.

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