
\documentclass{article}
  \usepackage[utf8]{inputenc}
  \usepackage[width=6cm]{geometry}
  \usepackage{fontawesome}
  \usepackage{fancyqr}
  \pagestyle{empty}

\begin{document}
\fancyqr[image=\huge\faStackOverflow,image padding=0,color=black!90!gray]{https://www.latex-fr.net/4_domaines_specialises/commerce/generer_des_qr_codes}
\end{document}
