# in beamer, change fontsize of selected slides with nested lists

I want to change the font size of particular frames, and when I use

\fontsize{<font size>}{<value for \baselineskip>}\selectfont


as suggested by this post, I found it does not change the font size inside nest lists. Is there a way to change those font size accordingly?

Here's a \ChangeItemFont command allowing you to change the font for the three valid nesting levels in an itemize environment, defined in the beamer way; the syntax is

\ChangeItemFont{<font commands 1st level>}{<font commands 2nd level>}{<font commands 3rd level>}


The code and an example with some crazy font sizes in the first frame, just for illustration:

\documentclass{beamer}
\usepackage{lmodern}

\makeatletter
\newcommand\ChangeItemFont[3]{%
\renewcommand{\itemize}[1][]{%
\beamer@ifempty{##1}{}{\def\beamer@defaultospec{#1}}%
\ifnum \@itemdepth >2\relax\@toodeep\else
\beamer@computepref\@itemdepth% sets \beameritemnestingprefix
\usebeamerfont{itemize/enumerate \beameritemnestingprefix body}%
\usebeamercolor[fg]{itemize/enumerate \beameritemnestingprefix body}%
\usebeamertemplate{itemize/enumerate \beameritemnestingprefix body begin}%
\list
{\usebeamertemplate{itemize \beameritemnestingprefix item}}
{\def\makelabel####1{%
{%
\hss\llap{{%
\usebeamerfont*{itemize \beameritemnestingprefix item}%
\usebeamercolor[fg]{itemize \beameritemnestingprefix item}####1}}%
}%
}%
\ifnum\@itemdepth=1\relax
#1%
\else
\ifnum\@itemdepth=2\relax
#2%
\else
\ifnum\@itemdepth=3\relax
#3%
\fi%
\fi%
\fi%
}
\fi%
\beamer@cramped%
\raggedright%
\beamer@firstlineitemizeunskip%
}}
\makeatother

\begin{document}

\begin{frame}
\frametitle{Font size changed}
\ChangeItemFont{\fontsize{30}{36}\selectfont}{\scriptsize}{\LARGE}
\begin{itemize}
\item First item.
\begin{itemize}
\item First subitem.
\begin{itemize}
\item First subsubitem.
\item Second subsubitem.
\item Third subsubitem.
\item Fourth subsubitem.
\end{itemize}
\item Second subitem.
\end{itemize}
\item Second item.
\item Third item.
\end{itemize}
\end{frame}

\begin{frame}
\frametitle{Regular font size}
\begin{itemize}
\item First item.
\begin{itemize}
\item First subitem.
\begin{itemize}
\item First subsubitem.
\item Second subsubitem.
\item Third subsubitem.
\item Fourth subsubitem.
\end{itemize}
\item Second subitem.
\end{itemize}
\item Second item.
\item Third item.
\end{itemize}
\end{frame}

\end{document}


• This answer is close to what I want to do in a separate question but I just cannot understand what is going on...where in your command are you actually changing the font size?? – Micah Smith Mar 8 '16 at 20:37
• @Gonzalo What about enumerate environment? It seems it is not working for that environment – Ruzayqat Nov 14 '16 at 22:42

To achieve a very similar goal I generally use the following:

\begin{frame}
\frametitle{Size changed}
\scalebox{0.8}{\begin{minipage}{1.20\textwidth}

\end{minipage}}
\end{frame}


I do not know how to compute the combined values of the scale factor and of the minipage width, I generally try several values until it satisfies me.

For example, the following content:

\begin{itemize}
\item First item.
\begin{itemize}
\item First subitem.
\begin{itemize}
\item \lipsum[75]
\item \lipsum[66]
\item \lipsum[75]
\end{itemize}
\item Second subitem.
\end{itemize}
\item Second item.
\item Third item.
\end{itemize}


gives:

and if you change the scale/minipage values to 0.6/1.6 you obtain:

• Maybe you would like to have a look at tex.stackexchange.com/q/313736/36296 I think, your solution might also work there. – user36296 Apr 24 '17 at 12:59
• @samcarter Thanks for your comment; do you think I should copy the proposed answer to the question mentioned in your comment or just make a link (I am not used to the habits in tex.stackexchange) ? – Lgen Apr 24 '17 at 13:04
• As the other question is a bit more general, maybe you could add a table or block to your code and post an "extended" version for the other question? That's what I would probably do. – user36296 Apr 24 '17 at 13:10
• And welcome to TeX.Stackexchange! – user36296 Apr 24 '17 at 13:11
• @samcarter I posted an enriched solution proposal for the other question (with a centered table & scale factor). Thanks for your welcome & help. – Lgen Apr 24 '17 at 15:05