how to fit a whole picture on page in latex
\newlength{\textundbildtextheight} \newcommand{\textundbild}[2]{ \settototalheight\textundbildtextheight{\vbox{#1}} #1 \vfill \begin{center} \includegraphics[width=\textwidth,keepaspectratio=true,height=\textheight-\the\textundbildtextheight]{#2} \end{center} \vfill }