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Your user-agent string, what it claims about browser, engine and operating system, and what your browser genuinely reports alongside it. Paste any string to parse that instead — with an honest warning that all user-agent parsing is guesswork.
Reading…Read from this tab and never sent anywhere. That matters here more than usual — this is precisely the list of values a fingerprinting script collects to recognise you across sites.
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“Claims” is the right word. Every browser deliberately impersonates the others in this string for compatibility, and Apple freezes the version number. Treat all of it as a hint, never as a fact.
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Paste one from a log or an analytics export and the panel above reads it instead.
Empty means “use my own”.
Paste into the editor or open a file — everything you add stays in this tab, and you see exactly what the tool will work on before anything runs.
Your browser does all the work locally. Nothing is uploaded — what you paste never leaves this tab, so there’s nothing for anyone to store, scan, or leak.
Take the result to your clipboard or save it as a file. Close the tab and nothing of what you pasted remains.