What does your browser leak?
The moment you open a page, your browser hands over a surprising amount of information without asking you. Here is exactly what sites can - and cannot - see.
What sites can read instantly
Your IP and approximate location, device type and operating system, browser and version, screen size, language, timezone, battery status on some devices, and a fingerprint built from all of it.
What sites cannot read
Despite the myths, a normal website cannot see your other open tabs, your browsing history on other sites, your files, or your identity by name. The fear is often bigger than the reality.
Reducing what you leak
A VPN hides your IP and location. A privacy browser limits fingerprinting. Together they cover the signals that matter most.
FAQ
Can a website see my name?
Not unless you tell it, log in, or it buys data from a broker keyed to your other signals.
Can a website see my other tabs?
No. Browsers isolate tabs and sites from each other for security.