How can I enlarge the font size of pifont characters?
I tried to use \large{\ding{204}}, but it doesn't work.
[Tex/LaTex] Font size control for pifont characters
fontsizepifont
Related Solutions
You need the command \selectfont after fontsize
\documentclass{beamer}
\usetheme{AnnArbor}
\title[My Title]{ \fontsize{20}{25}\selectfont My Title}
\begin{document}
\frame{\titlepage}
\frame{a frame}
\end{document}
Detailed information are documented in the Docmentation of LaTeX font commands
EDIT: Use the theme AnnArbor and the optional argument of \title.
According to section 18.2.1 of the beamer manual, a default font size of 8pt is already "way too small". beamer uses the extsizes packages for non-standard font sizes, and extsizes doesn't offer anything smaller than 8pt. If you really must fit more text on each frame, I suggest to enlarge beamer's paper size from 128mm*96mm to, say, 140mm*105mm.
\documentclass[8pt]{beamer}
\geometry{paperwidth=140mm,paperheight=105mm}
\usepackage{lipsum}
\begin{document}
\begin{frame}
\lipsum[1]
\end{frame}
\end{document}
EDIT: Another option is to load the scrextend package (part of KOMA-Script) which allows to choose arbitrary font sizes like 7.5pt -- be sure to use a vector font like Latin Modern.
\documentclass{beamer}
\usepackage{lmodern}
\usepackage{scrextend}
\changefontsizes{7.5pt}
\usepackage{lipsum}
\begin{document}
\begin{frame}
\lipsum[1]
\end{frame}
\end{document}
Best Answer
Since you're using these font elements via macros, you may just as well scale/resize them using
graphicx's\scalebox/\resizebox. Here's one option using the former:\ding[<factor>]{<element>}now scales\ding{<element>}to<factor>as an added optional argument. Default is 1, implying no scaling.