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dbader/gist:3f9adca03e655b90c2b8

Created December 8, 2014 16:57
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gistfile1.js
var canvas = document.createElement('canvas');
var ctx = canvas.getContext('2d');
canvas.width = 16;
canvas.height = 16;
ctx.fillStyle = '#F00'; // <- Pick a colour.
ctx.fillRect(0, 0, canvas.width, canvas.height);
var favicon = document.getElementsByTagName('link')[0];
favicon.href = canvas.toDataURL();
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