What your browser reveals

100% local — nothing leaves this page

Before you click anything, every website you visit can already read the values below. None of them alone identifies you — together, they sketch a surprisingly precise portrait. This page reads them the same way any site would, then shows them to you instead of logging them.

Browser and system

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Sent with every request. It names your browser, its version and your operating system — the first brick of a fingerprint.

Preferred languages

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Your language list hints at where you live and which communities you belong to — rarer combinations stand out more.

Time zone

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Narrows your location to a strip of the globe — and exposes travel when it stops matching your usual profile.

Screen and pixel density

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Resolution and pixel density are classic fingerprinting inputs: unusual hardware makes you easier to recognise across sites.

Window size

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The exact window size changes as you resize — precise enough to help link two visits from the same device.

Where you came from

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The referrer tells a site which page sent you — a search, a forum, an email link. Empty here means your browser kept it to itself.

Touch screen

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Reveals the device family — phone, tablet or desktop — before you have typed a single character.

Processor cores

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A hardware detail sites rarely need — but one more number that narrows down which device is yours.

Dark mode preference

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Even interface preferences leak: one more bit that distinguishes your setup from your neighbour's.

Cookies enabled

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Says whether a site may plant identifiers that survive the visit. Blocking third-party cookies trims the most invasive kind.

To shrink that portrait day to day, start with the internet privacy guide.