User Agent Parser

Parse and detect your browser name, version, operating system, device type, and rendering engine.

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1. Your current browser user agent string is automatically loaded and parsed on page load. 2. Paste a different user agent string into the input field to analyze it instead. 3. Review the parsed details: browser name and version, operating system, and device type. 4. Check the rendering engine and platform information in the detailed breakdown. 5. Copy any parsed field or the full user agent string using the copy buttons.

About This Tool

Your user agent string is a piece of text your browser sends to every website you visit, identifying your browser, operating system, and device. The User Agent Parser breaks down this often cryptic string into clear, readable information including your browser name and version, operating system and version, device type (desktop, mobile, or tablet), and rendering engine.

User agent parsing is essential for web developers who need to understand their audience, debug browser-specific issues, or implement feature detection. It is also useful for QA testers verifying that websites render correctly across different environments, and for anyone curious about what information their browser shares with websites.

The tool automatically detects your current user agent string but also lets you paste any user agent string to analyze it. This makes it a valuable debugging tool when investigating issues reported by users on different devices or browsers. All parsing is done client-side in your browser.

Frequently Asked Questions

A user agent string is a text identifier that your browser sends with every HTTP request. It tells websites what browser you are using, your operating system, device type, and rendering engine so they can deliver compatible content.
Yes. Most browsers allow you to override your user agent string through developer tools or browser extensions. This is commonly used for testing how websites behave with different browsers or devices.
User agent strings grew complex over decades as browsers added compatibility tokens to avoid being blocked by websites that only served content to specific browsers. This historical baggage makes them difficult to read without a parser.
While not completely unique, your user agent combined with other browser details can contribute to browser fingerprinting. Many users share the same user agent string, especially on common browser and OS combinations.
Google Chrome has been reducing the information in user agent strings through the User-Agent Reduction initiative. The newer Client Hints API is designed to replace user agent strings with more structured and privacy-respecting alternatives.

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