QrCode to zpl about bwip-js

[metafloor]

I recommend you experiment with scale to see how it correlates with the magnification factor used by ^BQ. The height and width options simply change scaleY and scaleX, sometimes unpredictably.

[manuelbosi]

@metafloor thanks for your reply.
Is it also possibile to render the qr code by handling custom dpi value manually?
For example I need to render the qrcode using a 600dpi value

[metafloor]

Just multiply scale by a factor predefined for each dpi. For example, 2 for 200dpi, 3 for 300dpi, and 6 for 600dpi.

[manuelbosi]

@metafloor So the value I set in the RenderOptions object is scale: myScale * myDpiScale, right?

[metafloor]

Have you worked with different dpi zpl printers? Typically, the zpl rendering engine does not scale for dpi. The scaling for dpi is done in the ZPL code - by the developer. Specifically, using ^BY to control module width and for qrcode, the magnification factor in the ^BQ command (which does have its defaults based on dpi).