User Agent Parser
Parse any User-Agent string into browser, engine, OS, CPU, device, and bot/AI-crawler classification. Uses Client Hints when available. 100% client-side.
About User Agent Parser
Parse any User-Agent string into browser, engine, OS, CPU, device, and bot/AI-crawler classification. Uses Client Hints when available. 100% client-side. Everything runs locally in your browser — your data never leaves your device.
How to use
- Enter your input in the tool above.
- Adjust any options to your preference.
- Use the Copy or Download buttons to save the result.
- Everything happens locally — your data never leaves your browser.
FAQ
What does this tool do?
Parse any User-Agent string into browser, engine, OS, CPU, device, and bot/AI-crawler classification. Uses Client Hints when available. 100% client-side.
Is my data sent to a server?
No. This tool runs 100% in your browser. Nothing is uploaded, tracked, or stored remotely. It works offline as a PWA.
What extra features does this tool have?
Extras: (1) UAParser.js-grade regex parsing (browser, engine, OS, CPU, device), (2) Client Hints integration via navigator.userAgentData, (3) Bot/AI-crawler detection (Googlebot, GPTBot, ClaudeBot, Bingbot), (4) Live 'Your UA' auto-detection on page load, (5) Bulk paste mode (one UA per line) with JSON output, (6) UA builder reverse mode — compose a UA from parts, (7) Confidence scoring (flags frozen/spoofed UA strings), (8) Export parsed results as JSON or CSV, (9) Copy individual fields with one click, (10) Honesty banner: UA strings are spoofable, Client Hints preferred, (11) PWA offline — works without network, (12) History of last 10 parsed UAs (localStorage)
Does this work offline?
Yes — install as a PWA and use it without network. All processing happens client-side.
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