# tiling a pattern for beamer background

Is there a solution to have a given pattern (lets say as a .pngfile) tiled on the background (background or background canvas) for beamer-presentations?
I only find links to the wallpaper package, what seems to bring up many problems.

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You can simply define a new canvas background:

\documentclass{beamer}
\usepackage{multido}
\setbeamertemplate{background canvas}{%
\parbox{\paperwidth}{%
\multido{\iR=1+1}{10}{\multido{\iC=1+1}{13}{%
\includegraphics[width=1cm,height=1cm]{tiger}}\\}}}
\setbeamercolor{title page}{fg=blue}
\setbeamerfont{title page}{series=\bfseries,
size=\Huge}

\begin{document}
\title{Hintergrundbild}
\author{Herbert Vo\ss}
\begin{frame}[plain]\maketitle\end{frame}

\frame{foo}

\end{document}


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Thanks for this answer. Maybe my questions was not detailed enough: I'd like to put a pattern on the background which would be repeated (tiled) over all the page to fill it. –  Bastian Ebeling Feb 20 '12 at 12:23
you can repeat the single pattern, see edited answer –  Herbert Feb 20 '12 at 12:38
Thanks for this simple idea. Maybe using \pgfdeclareimage and \pgfuseimage would make this even better? –  Bastian Ebeling Feb 20 '12 at 12:51
if I am right then the image is included only once in the pdf. The reason why \pgfdeclareimage should make no difference. –  Herbert Feb 20 '12 at 13:24
Oh, this is new to me. Thanks for the hint. –  Bastian Ebeling Feb 20 '12 at 13:30