What Your Browser Knows

See everything a website learns about you the moment it loads.

Questions

What can a website see about me?

More than most people expect, without asking: your IP address and the city and internet provider it points to, your device, operating system and browser, your screen size, language, time zone and local time, your graphics chip, installed fonts, battery level and system settings like dark mode. This page shows you all of it.

Can websites see my IP address and location?

Yes. Every server you connect to sees your IP address, and it usually gives away your city and internet provider. Your precise location is different: a site has to ask, and your browser shows a prompt first.

What is browser fingerprinting?

Combining many small details, like your screen, fonts and graphics chip, into an ID that's close to unique. Unlike a cookie, it isn't stored on your device, so clearing cookies or opening a private window doesn't change it.

Does this site store anything about me?

No. Everything except your IP address is read in your browser and never sent anywhere. To show your city and provider, this site's server looks up your IP address through ipinfo.io and keeps nothing. There are no analytics and no cookies.

How can I give away less?

Safari, Firefox and Brave all hide or blur some of these details; compare by opening this page in each. A VPN replaces your IP address, city and provider with its own. Tor Browser goes furthest, by making every user look the same.