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

\begin{document}
\FancyQrLoad{glitch}
\fancyqr[ image=\Large\faStackOverflow, image padding=0,
          gradient=true, gradient angle=135,
          right color=orange, left color=purple
        ]{https://www.latex-fr.net/4_domaines_specialises/commerce/generer_des_qr_codes}
\end{document}
