QR code

Prints a QR code with configurable model, module size, error correction, and alignment.

Example

{
  "type": "qrcode",
  "content": "https://example.com",
  "align": "center"
}

Fields

Field	Type	Description
typerequired	"qrcode"	Discriminator for QR code blocks.
contentrequired	string	Data to encode into the QR code. Must be at most 500 bytes after CP437 encoding. Minimum length: 1
alignoptional	string	Horizontal alignment of the printed QR code. Allowed: "left", "center", "right"
modeloptional	string	QR code model. Use model2 for normal QR codes; model1 is legacy, and micro is only suitable for very small payloads. Allowed: "model1", "model2", "micro"
cellSizeoptional	1 | 2 | 3 | 4 | 5 | 6 | 7 | 8	Size of each QR module in printer dots. Larger values print larger, easier-to-scan codes but require more paper width.
correctionoptional	string	Error correction level. Higher levels improve damage tolerance but reduce data capacity and can increase the printed symbol size. Allowed: "L", "M", "Q", "H"