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halftoneQR.html
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halftoneQR.html
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<!DOCTYPE html>
<html>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<head>
<title>Halftone QR Code Generator</title>
<script src="jquery-2.1.1.js"></script>
<script src='qrcode.js'></script>
<script src='halftoneqr.js'></script>
<link rel="stylesheet" href="style.css">
</head>
<body>
<h1>Halftone QR Code Generator</h1>
<h2>Drop an image into your browser, then click generate.</h2>
QR content:<br />
<textarea id="input" cols="50" rows="5">Kitty!</textarea><br />
Redundancy (error correction level):
<select id="error_level">
<option value="L">Low (7%)</option>
<option value="M">Medium (15%)</option>
<option value="Q">Quartile (25%)</option>
<option value="H" selected>High (30%)</option>
</select><br />
QR size:
<select id="size">
<option value="0">Auto</option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
<option value="5">5</option>
<option value="6" selected>6</option>
<option value="7">7</option>
<option value="8">8</option>
<option value="9">9</option>
<option value="10">10</option>
</select> (6 gives the largest blank square area)<br />
Background Type:
<select id="background">
<option value="image" selected>Image</option>
<option value="noise">Noise</option>
<option value="trans">Transparent</option>
</select><br />
<input type="button" id="go" value="Generate" /><br />
<canvas id="imageColour"></canvas>
<canvas id="imagePixel"></canvas>
<canvas id="imageThreshold"></canvas>
<a id="download" href="about:blank" download="qr.png" target="_blank" title="Download QR Code"><canvas id="output"></canvas></a><br />
<a href="http://lach.la">By Lachlan</a>
<br /><br />
Cat photo by Cayambe [<a href="http://creativecommons.org/licenses/by-sa/3.0">CC-BY-SA-3.0</a> or <a href="http://www.gnu.org/copyleft/fdl.html">GFDL</a>], <a href="http://commons.wikimedia.org/wiki/File%3ACat_close-up_2004_b.jpg">via Wikimedia Commons</a>
<div id="overlay">Drop image</div>
</body>
</html>