ROBOT.LK

I found these two sites to be very helpful in decoding QR codes online. All you have to do is either give the link of the image or download the image and upload. No need to use a smart phone to decode these codes when you are already connected.

http://zxing.org/w/decode.jspx

http://qr4.cloudapp.net/Free-Online-QR-Code-Reader.aspx