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Javascript QRCode scanner
JavaScript
branch: master

Resize input QR Code image

Resize input QR Code image to a maximum of width x height = 1024x1024 (keeping aspect ratio), to handle big images taken with mobile cameras.
latest commit 67e77fe14b
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src Resize input QR Code image
COPYING add sources
README Updated for the use of getUserMedia

README

JavaScript QRCode reader for HTML5 enabled browser.
2011 Lazar Laszlo  http://lazarsoft.info

Try it online: http://webqr.com

This is a port of ZXing qrcode scanner, http://code.google.com/p/zxing.

Usage:

Include the scripts in the following order:

<script type="text/javascript" src="grid.js"></script>
<script type="text/javascript" src="version.js"></script>
<script type="text/javascript" src="detector.js"></script>
<script type="text/javascript" src="formatinf.js"></script>
<script type="text/javascript" src="errorlevel.js"></script>
<script type="text/javascript" src="bitmat.js"></script>
<script type="text/javascript" src="datablock.js"></script>
<script type="text/javascript" src="bmparser.js"></script>
<script type="text/javascript" src="datamask.js"></script>
<script type="text/javascript" src="rsdecoder.js"></script>
<script type="text/javascript" src="gf256poly.js"></script>
<script type="text/javascript" src="gf256.js"></script>
<script type="text/javascript" src="decoder.js"></script>
<script type="text/javascript" src="qrcode.js"></script>
<script type="text/javascript" src="findpat.js"></script>
<script type="text/javascript" src="alignpat.js"></script>
<script type="text/javascript" src="databr.js"></script>

Set qrcode.callback to function "func(data)", where data will get the decoded information.

Decode image with: qrcode.decode(url or DataURL).
Decode from canvas with "qr-canvas" ID: qrcode.decode()

[new from 2014.01.09]
For webcam qrcode decoding (included in the test.html) you will need a browser with getUserMedia (WebRTC) capability.
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