SecuFocus

The Lab · Experiment 01

Your browser
has a story
to tell.

A web page can read some information without asking you to type it in. Let’s see what it can find.

Transparent windows illustrate different layers of a browser.

On the other side of the window.

This information is only displayed on this page.

Browser language
Not observed yet
Time zone
Not observed yet
Window size
Not observed yet
Pixel density
Not observed yet
Theme preference
Not observed yet
Motion preference
Not observed yet

The observation starts when you press the button.

What this tells us.

Your language can help a site choose a translation. Window dimensions help it adjust its layout. Several properties have legitimate uses while also potentially contributing to recognition mechanisms.

Resize your window, then run the observation again to see what changes.

What this does not tell us.

These values measure neither anonymity nor browser uniqueness. This experiment does not calculate a fingerprint or request your IP address.

The experiment’s code does not store or transmit the observed values.

Read the full feature