QRCode.js is a really simple javascript library that has the browser create the QR code itself (there is no image file created at the server)

Download library

http://davidshimjs.github.io/qrcodejs/

or

https://github.com/davidshimjs/qrcodejs

Upload the file “qrcode.min.js” to your server (only file required).

If your site doesn’t have jquery already then you’ll also need “jquery.min.js” (not required for WordPress sites for instance)

Creating a QR Code

  <div id="qrcode" style="width:160px; height:160px; margin-top:10px;"></div>

  <!--<script type="text/javascript" src="/myjavascriptfiles/jquery.min.js"></script>-->
  <script type="text/javascript" src="/myjavascriptfiles/qrcode.min.js""></script>

  <script type="text/javascript">
    var qrcode = new QRCode(document.getElementById("qrcode"), {
      width : 160,
      height : 160
    });


    qrcode.makeCode('qrcode.makeCode('http://mydomain.com/myfile');');    
  </script>

QR Code text field options

SMS QR Codes

Example: ‘SMSTO:+112345678:Hello this is the SMS message to send!’

http://goqr.me/qr-codes/type-qr-sms.html