QR code generator


Settings Remark
ECC level QR code has error correction capability to restore data if the code is dirty or damaged. Four error correction levels are available to choose from:
  • Level L(ow)
    7% of unreadable codewords can be restored in a QR code symbol without data loss.

    ECC level L

  • Level M(edium)
    15% of unreadable codewords can be restored in a QR code symbol without data loss.

    ECC level M

  • Level Q(uartile)
    25% of unreadable codewords can be restored in a QR code symbol without data loss.

    ECC level Q

  • Level H(igh)
    30% of unreadable codewords can be restored in a QR code symbol without data loss.

    ECC level H

Note:
The QR codes above displays text: A.

Raising this level improves error correction capability but also increases the amount of QR code data.

Level Q or H may be selected for factory environment where QR code get dirty, whereas Level L may be selected for clean environment with the large amount of data. Typically, Level M (15%) is most frequently selected.