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TeX - LaTeX Stack Exchange

Questions tagged [qrcode]

Questions about creating QR codes with TeX/LaTeX/etc.

Questions about creating Quick Response (QR) codes, readable by smart phones, using TeX/LaTeX/etc. This includes questions specific to the qrcode package, and other methods to produce such printed codes.

60 questions
7
votes
2 answers

qrcode with amsart

If I use qrcode with amsart I get extra vertical spacings in the resulting qrcode. \documentclass{amsart} \usepackage{qrcode} \begin{document} \qrcode{http://www.ctan.org} \end{document} Am I doing something wrong?
gerald
  • 185
6
votes
2 answers

Distorted QR code generated using \qrcode

When I use \qrcode, the resulting QR code image has blank lines running through it, leading to difficulty of my phone reading the QR code. Does anybody know how to remedy it? I've tried pdfLatex as well as XeLatex, and both lead to the same…
Coenraad van Schoor
  • 101
  • 2
2
votes
2 answers

Special characters in QR code

I am trying to read a list of URLs from a file and create QR codes for them. If they contain a # like in the example, I get an Illegal parameter number in definition of \qr@texttoencode error. Is it possible to make this work without having to…
patheticpat
  • 121
1
vote
0 answers

QR code contains weird lines

When using the qrcode package my QR codes have all of their pixels spread out causing lines to appear, see the image (hope it's visible). How do I get rid of this? More importantly, will it be visible in print, or is it just in the PDF…
Sorashi
  • 163
1
vote
0 answers

How to speed up compilation with fancyqr?

I use fancyqr to generate qrcode on large LaTeX documents (more than 500 pages). There is a lot of qrcode to generate which increases the compilation time. How to reduce the time of creation of qrcode? (or avoid regenerating them at each…
Xavier Pessoles
  • 45
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1
vote
1 answer

What are the practical limits of the `qrcode` package?

The manual for the qrcode package contains a section entitled "Limitations and Cautions," which warns: • The QR specification includes modes for encoding numeric, alphanumeric, or Kanji data more efficiently. This package does not (yet) offer those…
crmdgn
  • 2,628
0
votes
0 answers

Square peg (QR code), round hole

While unsuspectingly exploring ways to position a QR code over the large majority of a round label, I found myself in a situation where no fully satisfying visual outcome would seem likely after a few attempts, hence the square peg / round hole…
John Chris
  • 143
0
votes
2 answers

QR code in which every black module or corner has rounded corners

How would one begin to adapt this useful little package (https://ctan.org/pkg/qrcode?lang=en) to enable a call such as: \qrcode[rounded corners=0.1mm]{348b0b3}% Where the outcome is being able to control the corner radius of each black module from…
John Chris
  • 143