ESC+2D30 - QR Code
Plain English
Prints a QR code — the familiar square matrix barcode you see everywhere. QR codes can hold thousands of characters and are scannable by any smartphone camera. They support error correction so they still work even if partially damaged.
When to use
When you need a barcode that smartphones can scan, or when encoding URLs, long text, or large amounts of data.
Syntax
ESC+2D30,params,data
Parameters
| Parameter | Description |
|---|---|
model | QR model: 1 or 2 (use 2 for standard) |
ecc | Error correction: L (7%), M (15%), Q (25%), H (30%) |
size | Module size in dots |
data | The data to encode |
Example
ESC+A ESC+H0100 ESC+V0050 ESC+2D30,06,03,04,01,00,0000https://example.com ESC+Q1 ESC+Z
QR code encoding a URL