\documentclass{article}
\usepackage{pdfpages}
%\VignetteIndexEntry{REMixed_vignette}
%\VignettePackage{REMixed}
%\VignetteEncoding{UTF-8}

\begin{document}
\includepdf[pages=-, fitpaper=true]{Vignette___REMixed.pdf}
\end{document}