User Agent Parser
Instant client-side user agent analysis.
- Runs in your browser
- Free, no signup
Parsed Result
- Browser
- —
- Operating System
- —
- Device Class
- —
- Rendering Engine
- —
- Bot / Crawler
- —
- Architecture
- —
Processed entirely in your browser. User agent strings are never uploaded or logged.
Every web browser, mobile app, and search engine crawler identifies itself to servers through a User-Agent header string. However, modern user-agent strings are notoriously bloated with legacy tokens like Mozilla/5.0 and AppleWebKit for backwards compatibility.
This parser dissects any user-agent string directly in your browser, extracting the true browser name, version, operating system, rendering engine, device class, and bot classification.
How to use this tool
- Click Use My User Agent to inspect your current browser, or paste any string into the text box.
- Click Parse User Agent to analyze the string.
- Review the parsed breakdown and click Copy JSON to export the structured result.
Why are user-agent strings so complex?
During the early browser wars, websites served different code based on browser identifiers. To ensure compatibility, newer browsers began mimicking older ones: Chrome includes Safari and AppleWebKit in its string, and Edge includes Chrome and Safari.
Our parsing engine uses verified token prioritization rules to accurately identify the real browser rather than historical compatibility labels.
Zero server uploads
User-agent strings can contain information about your hardware architecture and operating system build. To preserve your privacy, this tool runs entirely on your device using client-side JavaScript.
Frequently asked questions
Can this tool detect web crawlers and search bots?
Yes. Patterns for Googlebot, Bingbot, YandexBot, DuckDuckBot, Applebot, and other standard automated scrapers are recognized.
What is Client Hints?
Client Hints (User-Agent Client Hints or UA-CH) is a newer web standard designed to replace verbose User-Agent strings with selective, privacy-preserving headers.