Visitor Analytics

Modern browsers block most history detection. Results below show what older or misconfigured browsers may leak.

Custom pixel-level analysis. Every OS and browser renders text, emojis, and gradients slightly differently — creating a unique visual fingerprint.

Custom engine-level probes. Different JS engines (V8, SpiderMonkey, JSC) produce different error messages, prototype chains, and function serialisations.

Live behavioral biometrics. Your mouse movement patterns, scroll physics, and installed extensions are tracked in real-time as you interact with this page.

WebGL2 hardware parameters, shader precision, and GPU-specific rendering limits. These values create a near-unique fingerprint of your exact graphics card and driver version.

Your browser’s Internationalisation API reveals exactly how it formats numbers, dates, currencies, and text — exposing your locale, region, and language settings even if you hide your IP.

Which CSS features your browser supports reveals your exact browser version. We test 37 modern CSS properties — the combination is nearly unique to your browser build.

Your browser’s cryptographic capabilities, random number generator quality, and key generation speed. Reveals which encryption algorithms are available and how fast your hardware processes them.

Your audio hardware signature. Sample rate, latency, channel count, and installed speech voices are near-unique to your device and OS language packs.

Canvas API capabilities and rendering behaviour. Blend modes, filter support, and winding fill rules produce different pixel output per browser engine.

Multi-threading and inter-process communication capabilities. SharedArrayBuffer availability reveals your site’s security headers (COOP/COEP).

Your engine’s memory architecture. Call stack depth varies by browser and device — a desktop Chrome allows ~12K frames while Safari allows ~45K.

Connection-level details from the Performance API. Reveals your HTTP protocol version, TLS handshake time, and total data transferred — all without any network requests.

Sub-pixel font measurements and rendering characteristics. The system-ui font differs per OS, monospace ratios reveal your font engine, and emoji version exposes your OS update level.

Modern rendering and animation APIs. Support for View Transitions, CSS Houdini paint worklets, and Scroll Timelines reveals your exact browser generation.

File handling and data encoding capabilities. OPFS access, compression support, and character encoding availability reveal your browser’s data processing stack.