Discover your browser's hidden ID. Our canvas fingerprint test reveals the unique hash generated by your GPU and system fonts to track you without cookies.
AI Overview
A Canvas Fingerprint is a tracking technique that uses the HTML5 <canvas> element. It forces your browser to draw a hidden image. Because every GPU and graphics driver renders pixels slightly differently, the resulting hash is almost unique to your device, allowing websites to follow you across the web.
Your GPU Render
Micro-variations in this image create your fingerprint.
Unique Canvas Hash
Computing...
Canvas Fingerprinting is a highly accurate way for websites to identify you without using traditional cookies. When you visit a site, it asks your browser to draw a specific text or shape. Because your graphics card (GPU) and installed system fonts are unique, the pixel data produced is different for every user.
Privacy Fact: Unlike cookies, you cannot "delete" a canvas fingerprint. It is computed in real-time from your hardware performance, making it a permanent tracking ID.
Advertisers and fraud prevention systems use the canvas hash to link your browsing sessions together. Even if you use a VPN or Incognito mode, your hardware rendering remains the same. This allows companies to build a profile of your habits across different domains without your explicit consent.
Since this tracking happens at the hardware level, protecting yourself requires specific browser tools. On ZKB Tracking, we recommend these methods:
privacy.resistFingerprinting setting to normalize results.Does Incognito mode block this?
No. Incognito only stops your history from being saved. It does not change how your GPU renders pixels.
Is my fingerprint unique?
Mostly. While you may share a hash with users having identical hardware and software, the combination of font smoothing and GPU drivers usually makes it 99% unique.
Is canvas fingerprinting legal?
Under GDPR, tracking a user uniquely requires consent. However, many sites use it for "security purposes" to bypass these rules.