Using this Application is pretty simple

 1. Enter the data in the given space.
 2. Now, enter the path along with filename that you want to save. 
          Eg., You want to save the qrcode as 'img.png' in a certain directory like 'E:\images'. So you will save it as 'E:\images\img.png'
 3. Now click on convert and your data is converted into a QR Code.