Browser information
What your browser says about you.
See the request headers, languages, time zone, screen, and device details your browser reveals to every website you visit.
Sent with every request
Request headers
Your browser sends these to every website before any page loads. This list comes from one request to our server, which echoes them back without storing them.
Readable by scripts
Device and settings
Any page can read these values with JavaScript. They are shown here only; this page does not send them anywhere.
Why this matters
Each value is harmless alone. Together, your screen size, languages, time zone, and browser version can be distinctive enough to recognise a browser again without cookies. This is known as fingerprinting.
What a VPN does not change
A VPN replaces the public IP address websites see. It does not change your browser’s languages, time zone, or screen details, which can still hint at where you are.
Understand VPN comparisons →