Browser Fingerprint Info (What Sites See)
Every website you visit can read dozens of data points about your browser: user agent string, screen resolution, timezone, installed fonts, GPU model, language preferences. Combined, these often uniquely identify your browser — a "fingerprint" that works even without cookies. This tool shows exactly what your browser exposes.
How to use the Browser Fingerprint Info (What Sites See)
Load the page — all data is collected automatically. Hover any row for explanation. The "uniqueness score" at the bottom estimates how identifying your fingerprint is.
About Browser Fingerprint Info (What Sites See)
Browser fingerprinting works by combining many small data points that individually mean little but together identify you. amiunique.org shows most browsers are uniquely identifiable from ~20 standard data points. This is privacy-relevant because:
- Trackers identify you across sites without cookies.
- Cookie-blocking and incognito mode don't help if fingerprinting works.
- Some "privacy" browsers (Brave, Tor) randomize or block fingerprinting APIs to defend.
The most identifying signals: Canvas fingerprint (how your GPU renders a specific shape — varies by GPU + driver + OS), WebGL renderer string (exposes GPU model), installed fonts list (300+ font test produces ~10 bits of entropy on average).
Common use cases
- Privacy education — see what trackers can learn about you.
- Browser testing — verify your fingerprint matches expected when using stealth browsers.
- Bug triage — capture browser environment details for a support ticket.