https://developers.google.com/chart/image/docs/post_requests
Create QR Codes
<form action='https://chart.googleapis.com/chart' method='POST'> <input type="hidden" name="cht" value="qr" /> <input type='hidden' name='chs' value='300x200' /> <input type="hidden" name="chl" value="What you want inside your QR" /> <input type='hidden' name='chld' value='H|0=absolute'/> <input type="submit" /> </form>