UA Parser

Decode any User-Agent string into browser, OS, device, engine & platform details — instantly & privately.

Your current User-Agent:

🔒 100% Private

All parsing happens in your browser. No data is ever sent to a server.

⚡ Instant Results

Zero network calls. Parse thousands of UA strings per second locally.

📋 Copy as JSON

One click to copy structured JSON output for APIs, logs, or documentation.

🎲 Random Generator

Generate realistic UA strings from common browsers for testing purposes.

Frequently Asked Questions

What is a User-Agent string?
A User-Agent string is an HTTP header your browser sends to every website. It identifies your browser type, version, operating system, and device so servers can serve compatible content.
How accurate is this parser?
The parser uses comprehensive pattern matching for all major browsers and operating systems. It handles modern Chromium-based browsers, Firefox, Safari, Edge, and legacy browsers accurately.
Is my data stored anywhere?
No. All parsing runs entirely in your browser using JavaScript. No UA string is transmitted to any server. The last 5 parses are kept in memory only and disappear when you close the tab.

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