Browser
- User agent
- -
- Languages
- -
- Cookies
- -
- Do Not Track
- -
System & screen
- Platform
- -
- Resolution
- -
- Pixel density
- -
- Color depth
- -
- CPU cores
- -
- Memory (approx.)
- -
- Timezone
- -
Connection
- Status
- -
- Estimated type
- -
- Browser downlink
- -
- Data saver
- -
WebRTC exposure
- Local address
- -
Why is this visible?
Your browser exposes these values so pages can render properly: screen size for layout, languages for translation, timezone for dates. Combined, they form a "fingerprint" that can recognize you across sites, even without cookies.
The WebRTC test
WebRTC powers in-browser audio/video calls. It historically could leak your local IP address to any site. Modern browsers hide it behind a ".local" (mDNS) identifier: the test above tells you whether yours protects you.