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Suppose I have a Beamer presentation with 20 slides, and I need to make a poster out of them in 5 minutes.

Is it possible to have Beamer output the slides into a 5x4 grid on an a0 sized pdf?

I'm not really sure how I'd go about doing this, but I have a hunch that it should be possible. Any thoughts?

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Take a look at pgfpages (in the pgf manual). That should give you a starting point. – Loop Space Oct 17 '12 at 14:49
@lockstep answered. Defining the layout is a pain without a loop so I figured it worth answering. – Loop Space Nov 4 '12 at 19:06

This is eminently possible using pgfpages. It doesn't have a 20 on 1 layout built in (the biggest being 16 on 1) but it's not hard to define one (a bit tedious without a for loop).



\pgfpagesdeclarelayout{20 on 1}
    logical pages=20,
    physical height=\pgfpageoptionheight,
    physical width=\pgfpageoptionwidth
  \foreach \i in {1,...,4} {
    \foreach \j in {1,...,5} {
      \pgfmathtruncatemacro\n{(\i-1)*5 + \j}
      \pgfmathsetmacro\ri{1 - (\i - .5)/4}
      \pgfmathsetmacro\rj{(\j - .5)/5}
        border code=\noexpand\pgfsetlinewidth{2pt}\noexpand\pgfstroke,
        border shrink=\noexpand\pgfpageoptionborder,
        resized width=.25\noexpand\pgfphysicalwidth,
        resized height=.2\noexpand\pgfphysicalheight,

\pgfpagesuselayout{20 on 1}[a0paper, border shrink=5mm,landscape]


\foreach \k in {1,...,20} {

\begin{frame}{Frame \k}

This is frame \k.
It is exciting.

pgfpages 20 on 1 layout

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