Extraer páginas de un pdf con LaTeX

\documentclass[a4paper]{extarticle}
\usepackage{graphicx}     
\usepackage[margin=0mm]{geometry}
\usepackage{tikz}

\newcommand{\paginapdf}[2] % Compilar dos veces
{\begin{tikzpicture}[remember picture,overlay,inner sep=0pt]%
\node [anchor=east] at (current page.east) 
{{\includegraphics[page=#2]{#1}}};%
\end{tikzpicture}\newpage}

\newcounter{pdfpages}
\newcommand*{\getpdfpages}[1]{%
  \begingroup
    \sbox0{% 
      \includegraphics{#1}%
      \setcounter{pdfpages}{\pdflastximagepages}%
    }%
  \endgroup
}

\newcommand{\imprimirpdf}[1]{%
\getpdfpages{#1}%
\foreach \x in {1,...,\value{pdfpages}} {%
\paginapdf{#1}{\x}%
}}

\begin{document} %Compilar dos veces
\imprimirpdf{outputjpg.pdf}
\imprimirpdf{outputjpg.pdf}
\imprimirpdf{outputjpg.pdf}
\def\ficheropdf{outputjpg.pdf} 
\foreach \numeropagina in {2,1,1,2} {%
\paginapdf{\ficheropdf}{\numeropagina}%
}%
\end{document}