Dies ist QR-Code-Scanner-Tool. Ziehen Sie QR-Code-Bild in die Dropzone. Denso Wave erstellte 1994 QR-Code. The size of a QR code shouldn’t be below 1 x 1 cm (0.4 x 0.4 in). Having a QR code printed in a smaller size might not be able to be decoded by a QR code reader/scanner.