Free privacy check

What Your Browser Reveals

Every website you visit can read the details below without asking you. Together they can recognise your browser again, even after you clear cookies or open a private window. Nothing here is sent anywhere.

Your browser fingerprint

Working…

Made from the stable details on this page. A tracking script calculates something similar and links your visits on every site that uses it. Try it: clear this site's cookies or open a private window and reload. If the code stays the same, so would theirs.

Read in your browser. This page cannot send anything anywhere.

What this page cannot show

Your IP address. Every website sees it, and it usually reveals your internet provider and roughly where you are, often down to the city. Showing it would mean contacting a server, and this page never does. A VPN or Tor replaces it with another address.

How to reveal less

Use a browser with fingerprinting protectionTor Browser and Mullvad Browser make every user look the same. Brave adds random noise to the details trackers read. Firefox with strict tracking protection and Safari block known fingerprinting scripts.
Blend in rather than stand outUnusual extensions, fonts, screen sizes and settings make you easier to single out. A popular, up-to-date browser with few changes is harder to tell apart.
Turn on Global Privacy ControlA signal telling websites not to sell or share your data. In some US states, including California and Colorado, businesses must honour it. Brave, DuckDuckGo and Firefox can send it.
Block third-party cookies and trackersFingerprinting usually runs alongside cookie tracking. A content blocker such as uBlock Origin removes many tracking scripts before they run.
Check your permissionsReview which sites can use your location, camera, microphone and notifications, and remove the ones you do not need.
Hide your IP address when it mattersUse a trustworthy VPN or Tor. Remember that signing in to an account identifies you whatever else you do.

Questions

What is browser fingerprinting?

Tracking that recognises your browser from the combination of details it exposes, instead of storing a cookie. No single detail identifies you, but together they often do: published studies have found that most browsers they measured had a unique combination. Because nothing is stored on your device, clearing cookies or using a private window does not change it.

Why does my time zone matter?

It narrows down where you are, and it is used to spot people whose IP address says one country while their computer clock says another, for example someone using a VPN.

How do the canvas and audio fingerprints work?

A script draws text and shapes, or generates a short sound, without showing or playing it, then reads back the result. Tiny differences in graphics cards, drivers, fonts and audio processing change the output, so it acts like a signature for your device. The picture used for the canvas test is shown on this page.

Is my fingerprint unique?

This page cannot tell, because it would need to compare you with other visitors and it never sends anything. Large research projects such as the EFF's Cover Your Tracks do that comparison. What this page shows is how much any site can read and that it does not change when you clear cookies.

Does this page send my information anywhere?

No. Everything is read and shown in your browser, and the page blocks all network requests. Open your browser's developer tools and select the Network tab to confirm, or disconnect from the internet and reload.