What does your browser reveal about you?

Every website you visit can read the signals below without asking. Click the button to see them - everything runs locally in your browser, nothing is sent, stored or shared.

Click the button to read the signals your browser exposes.

Why this matters

Each value above is harmless on its own. Combined, they form a fingerprint that can make your browser rare or even unique among visitors, letting sites recognise you without cookies. This tool cannot honestly tell you HOW unique you are - that requires comparing you against a large dataset on a server, and we deliberately send nothing.

What you can do

• Use a browser that resists fingerprinting (Tor Browser standardises many of these values; Firefox and Brave block parts of it).
• Fewer extensions and non-standard fonts mean a less distinctive profile.
• Blocking third-party trackers cuts most tracking in practice even when fingerprinting stays possible.
• Do Not Track is a request sites may ignore; Global Privacy Control has legal force in some places (like California).

Guide: how to stop websites tracking you
Guide: the best private browser

Everything on this page runs in your browser. No data leaves your device.