[OS X TeX] QR codes

Juan Luis Varona jvarona at unirioja.es
Wed Oct 16 20:29:26 EDT 2013

Dear friends,

This is a strange behavior in the mac:

Lel's execute this code copied from


%\usepackage{auto-pst-pdf} % uncomment this if used with pdflatex
    \psbarcode{Some text}{}{qrcode}


If you see the pdf with Apple Preview, or with TeXShop, or Skim, 
and yo do a lot of zoom, it seems that the pdf is not vectorial, 
because you see points of different gray level.

This does not happens with Adobe Reader. Why?


Juan Luis Varona

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