Minimal QRWidth to get maximum size of logo

[Julien Biard]

Hi,

I am wondering if there is a way to compute the minimal QRWidth to have the maximum size of logo.

Any idea ?

Regards.

[yeqown]

I'm afraid no, logo size is limited to one-fifth of QR Code, but actually, QR Code size of not determined, so there is not a formula to calculate.

This feature looks like weak to use, I'm sorry about this

[yeqown]

How about setting the logo image with size max percent limitation, choosing the mininum size between max-percent and actually logo image size while drawing logo image?

For example:

logoSize = {w: 30, h: 30}
qr = {w:120, h:120}
maxPercent = 20% = 24
logoSize = min(logoSize, maxPercent)

logo image would be scale automatically if the actual image is oversize. Would this be helpful in your case?

[Julien Biard]

Thanks for your reply. If it's possible I prefer to set the cell width instead of resizing logo image.

I have implemented this to get the appropriate cell width (QRWidth option) :

qrImageWidth := 5*logoWidth + borderWidth*2
qrCodeWidth := qrImageWidth / qrc.Dimension()
if (qrImageWidth % qrc.Dimension()) != 0 {
  qrCodeWidth = qrCodeWidth + 1
}
opt := standard.WithQRWidth(qrCodeWidth)

My logo image is large and it is a square.

[yeqown]

I have a question: If your logo image is large enough, the output QR Code will be so bigger, that's really what do you want? 😂

[Julien Biard]

Yes ! :)

[yeqown]

fine 😁