Basic ^BQN sample
The common data prefix is LA before the payload. Test the final printed size, not only the browser zoom level.
^XA
^PW812
^LL406
^FO80,60^BQN,2,8
^FDLA,https://zplpreview.com^FS
^XZZPL ^BQN QR Code Command
^BQN creates QR codes. Most production problems come from size, data prefix, quiet zone, or printed contrast.
^BQNQR CodeScan
Check QR readiness