Privacy Testing Suite
These tools run entirely locally in your browser using vanilla JavaScript. We do not log or store any of the results. Use them to test the effectiveness of your current browser setup against fingerprinting and tracking.
Canvas Fingerprinting Test
Checks if your browser protects against HTML5 Canvas fingerprinting, a technique used to track you without cookies.
Run Test →User-Agent Parser
Extracts the exact OS and browser version from your HTTP headers.
Run Test →WebGL Fingerprinting
Reads your GPU vendor and renderer information, often used for cross-browser tracking.
Run Test →Screen Metrics Leak
Shows how much information sites can glean from your monitor setup.
Run Test →CPU Concurrency Test
Reveals how many logical processors your device has, adding entropy to your fingerprint.
Run Test →Device Memory Test
Reveals the approximate amount of RAM on your device (in GB).
Run Test →Language & Timezone Leaks
Extracts your precise system language preferences and geographical timezone.
Run Test →Local Storage Inspector
Checks if your browser allows DOM storage (a common cookie alternative).
Run Test →First-Party Cookie Test
Checks if basic first-party cookies are enabled.
Run Test →Font Enumeration Stub
Demonstrates how sites use generic font families to guess your OS.
Run Test →Compare your results
Run these tests in Google Chrome, and then run them again in Mullvad Browser or a hardened Firefox setup. The difference in what is exposed will shock you.