Make your own QR code in one minute

What is QR?

QR stands for Quick Response and is a barcode in the form of a two-dimensional matrix.

How is it made? (Let’s Do IT -> go)

There is a large rectangle with 3 vertices and a small rectangle close to 1 vertex, and as the content of the QR code increases, the small rectangles increase with a certain size interval. You can store up to 7,089 numeric characters, 4,296 ASCII characters and 1,700 Korean characters (up to 1,817 Chinese characters). Even if a part of the data is lost, there is an ECC (Error Correction Code) function so that the rest can be read and restored. As the ECC capacity increases, the data stability will increase, but the size will also increase.

Need a license?

Developed by Denso Wave in Japan in 1994, Denso Wave does not exercise any patent rights, so the use is free.