I have two files one f1.pdf and other is f2.djvu. I want to join them and the output file will be pdf. Already I have tried to do this by the following command. But these are not working. Is there any way to do so ?
\documentclass{article}
\usepackage{pdfpages}
\begin{document}
\includepdfmerge{f1.pdf,1}
\includepdfmerge{f2.djvu,1-553}
\end{document}