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User-Agent Parser

Parse user-agent strings to identify browsers, devices, and operating systems instantly. Includes random user-agent generation for testing and development.

User-Agent Parser
Analyze user-agent strings to identify browsers, devices, and operating systems

About User-Agent Strings

  • User-Agent strings are sent by browsers to identify the application, operating system, vendor, and version
  • They are used for browser detection, analytics, and content adaptation
  • This tool parses user-agent strings to extract browser, OS, and device information
  • Generated user-agents can be used for testing purposes to simulate different browsers/devices
  • Some user-agents may not be parsed correctly due to custom formatting or unusual patterns

About this tool

Analyze user-agent strings to extract detailed information about browsers, operating systems, and devices with comprehensive parsing capabilities. Perfect for web developers, security professionals, and system administrators who need to identify client environments, debug compatibility issues, or analyze traffic patterns. Includes a random user-agent generator for testing purposes, allowing you to simulate different browsers and devices. Extract browser name, version, OS, device type, and other properties from any user-agent string for enhanced analytics and debugging.

How to use the User-Agent Parser

  1. Open the tool to see your own browser's user-agent string already parsed.
  2. Paste any other string into the User-Agent String box to analyze it.
  3. Read the browser, operating system and device type under Analysis Results.
  4. Click Generate Random User-Agent for a realistic test string, then Copy Generated or Use This.

Give us your feedback

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Frequently asked questions

What is a user-agent string?

A user-agent string is a line of text your browser sends with every request to identify itself, its version and the operating system it runs on. Websites use it for analytics, compatibility fixes and bot detection, though modern browsers now trim some details for privacy.

How accurate is the parser?

It uses lightweight pattern matching that recognizes Chrome, Firefox, Safari, Edge and Internet Explorer on Windows, macOS, Android and Linux. Browsers built on Chrome, such as Opera, show as Chrome, Windows 11 shows as Windows 10 because it sends the same version token, and device model and CPU are not detected.

What is the random user-agent generator for?

It creates a realistic user-agent string based on real-world browser data, which is handy for testing how a site or API responds to different clients. Copy it with Copy Generated, or click Use This to parse it.

Is my user agent sent to a server?

Parsing happens in your browser, so no server is needed to read the string. Usage analytics record the first 100 characters of any string you type, paste or generate, along with the detected browser, OS and device type.

User-Agent Parser screenshot

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