File: canvas-fingerprinter.html

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<!doctype html>
<html>
<head>
  <title>A page containing a canvas fingerprinter</title>
</head>
<body>
  <canvas width=200 height=200>
  </canvas>
  <script>
    var canvas = document.querySelector("canvas");
    var context = canvas.getContext("2d");

    context.fillStyle = "rgb(100, 210, 0)";
    context.fillRect(100, 10, 50, 50);
    context.fillStyle = "#f65";
    context.font = "16pt Arial";
    context.fillText("<@nv45. F1n63r,Pr1n71n6!", 20, 40);

    var data = canvas.toDataURL();
  </script>
</body>
</html>