Parsers & Readers
User-Agent Parser
Decode any User-Agent string into browser, engine, OS and device.
User-Agent string
About this tool
Paste a User-Agent string (yours or one from a log) to see the parsed browser name/version, layout engine, operating system, device type/vendor/model and CPU architecture. Uses the widely-adopted ua-parser-js library loaded from CDN - runs fully in the browser, nothing goes to a server.
FAQs
How accurate is it?
Very accurate for common browsers and OS families. Rare / synthetic UAs may parse partially. The parser is the same one used by many logging pipelines.
Can it detect bots?
It reports the browser/engine name as-is. If a bot advertises 'MyCrawler/1.2', that shows as the browser. It doesn't have a bot-vs-human heuristic.
Does my UA leave the browser?
No. The parser is JavaScript running locally after the library loads from esm.sh.