Create QR code using Google Chart API
select image size:
100x100
150x150
200x200
250x250
300x300
350x350
400x400
500x500
select error correction level:
L (7%)
M (15%)
Q (25%)
H (30%)
Enter text, url(with 'http://'), or phone #(add 'tel:' at the beginning)
copy & paste url to use on your page
