User Agent Parser

Parse user agent strings to extract browser, operating system, device, and rendering engine information.

Examples:

About User Agent Strings

User agent strings identify the browser, operating system, and device making a request. They follow a semi-standardized format but can vary widely. This parser uses pattern matching to extract common information. Note that user agents can be spoofed and should not be relied upon for security purposes.

Common Browsers:

  • • Chrome (Blink engine)
  • • Firefox (Gecko engine)
  • • Safari (WebKit engine)
  • • Edge (Blink engine)

Use Cases:

  • • Browser compatibility testing
  • • Analytics and tracking
  • • Feature detection fallback
  • • Debugging user issues

What is a User Agent Parser?

A User Agent Parser analyzes HTTP User Agent strings to extract detailed information about web browsers, operating systems, devices, and rendering engines. User Agent strings are headers sent by browsers identifying themselves when making HTTP requests.

Our tool parses complex User Agent strings into structured data showing browser name and version, operating system and version, device type (desktop, mobile, tablet), device manufacturer, and rendering engine. It handles modern and legacy User Agents including Chrome, Firefox, Safari, Edge, and mobile browsers.

Why Parse User Agent Strings?

User Agent parsing enables device-specific content delivery, browser compatibility testing, web analytics, and security monitoring. Understanding visitor browser and device information helps optimize user experience, debug browser-specific issues, and detect automated bots or suspicious traffic patterns.

Perfect for web developers debugging cross-browser issues, data analysts processing web analytics, security professionals detecting bot traffic, QA engineers testing browser compatibility, and marketing teams analyzing visitor demographics and device trends.

Common Use Cases

Web Analytics: Extract browser and device statistics from server logs, understand visitor demographics, track mobile vs desktop usage, and analyze browser version adoption rates.

Browser Testing: Identify browser and OS combinations during QA testing, reproduce browser-specific bugs, and validate responsive design across different device types.

Security & Bot Detection: Identify automated traffic, detect suspicious User Agents, analyze crawler behavior, and implement bot protection strategies based on User Agent patterns.

How to Use the User Agent Parser

Paste any User Agent string from browser DevTools, server logs, or HTTP headers. The tool automatically detects your current browser's User Agent, making it easy to test and understand what information your browser shares.

View comprehensive parsed results including browser family and version, operating system name and version, device type and manufacturer, rendering engine, and whether the User Agent indicates a mobile device, tablet, or desktop computer.

Related Tools

Explore more tools to enhance your productivity

IPv4 Address Converter Developer Tools

Convert IPv4 addresses between different formats: decimal, hexadecimal, binary, octal, and dotted decimal notation.

IPv4 Range Expander Developer Tools

Expand an IPv4 address range into a list of individual IP addresses. Useful for network planning and IP allocation.

IPv4 Subnet Calculator Developer Tools

Calculate IPv4 subnet details including network address, broadcast address, usable host range, subnet mask, and wildcard mask.

IPv6 ULA Generator Developer Tools

Generate IPv6 Unique Local Address (ULA) prefixes for private networks. RFC 4193 compliant with cryptographically random Global IDs.

MAC Address Generator Developer Tools

Generate random MAC addresses with configurable unicast/multicast and locally/universally administered settings. Multiple format outputs.

MAC Address Lookup Developer Tools

Analyze MAC addresses to understand their structure, OUI, and properties. Educational tool for learning about MAC address components.