User Agent Parser extracts structured information from User-Agent strings including browser name and version, operating system and version, device type (desktop, mobile, tablet, bot), rendering engine (Blink, WebKit, Gecko), and CPU architecture. It uses pattern matching against thousands of known UA signatures and handles modern compressed Client Hints UA strings alongside legacy User-Agent headers.
Web analytics engineers building traffic reports, frontend developers debugging cross-browser issues, and security teams identifying bot traffic patterns. The tool runs entirely in your browser — your data never leaves your device.
Learn more about related topics: Client Hints, Feature detection, Browser fingerprinting, Sec-CH-UA.
User Agent Parser is a free, browser-based developer tool on AIDToolStack. Parse browser, OS, device type, and engine from any User-Agent string It requires no installation or sign-up and works entirely in your browser.
Yes, completely free. User Agent Parser has no usage limits, no account requirements, and no hidden fees. Use it as often as you need.
No, all processing happens locally in your browser. Your data never leaves your device and nothing is sent to any server.
Yes, it works in any modern browser on both desktop and mobile devices. No app download required — just open the page and start using it.
AIDToolStack tools run entirely in your browser with no server processing. This means faster results, complete privacy, and zero downtime. There are no ads blocking your workflow, and everything is free with no sign-up required.
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