This is a QR code maker that I made for my classes. I can make multiple qr codes at once. There are a host of things you can do with QR codes, especially in the ESL classroom. I use them to list answers. I attach them to pictures. If my student doesn't know a word in a picture, all they have to do is scan the QR code below it. I also take role with QR codes. I can copy and paste students' names into the spreadsheet. It gives me QR codes for 30 students within seconds.