To add more Qr codes, add suffix after LetMyCard Id eg.LetMyCard id=4444444444
Then for 1st qr add 0 suffix,so id will 44444444440,
for 2nd qr add 1 so ,so id will 44444444441

Read Qr From:

 
To Save File :

while Pressing Alt Key , click mouse button

Or Right click on button and click on Save Link As Menu