# Freeing space by Formating the size of citations on slides in Beamer using Biblatex

I want to change the size of my citations on the slides. My relevant preamble:

\usepackage[style=apa,sorting=nyt,backend=biber]{biblatex}
\DeclareLanguageMapping{ngerman}{ngerman-apa}
%---------------Document-----------------------%
\begin{frame}[allowframebreaks]
\frametitle{References}
%\nocite{*}
\renewcommand*{\bibfont}{\scriptsize}
\printbibliography
\end{frame}


Up until now I do it likes this:

{\tiny\parencite{Harris.12}}


Question: Is there an option to format this for all citations in the beamer-presentation?

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You can use \citesetup to provide code to be executed at the beginning of each citation command; a little example (in the example I changed the style and the .bib file used, but this is not important):

\documentclass{beamer}
\usepackage[style=authoryear,sorting=nyt,backend=biber]{biblatex}

\renewcommand\citesetup{\tiny}

\begin{document}

\begin{frame}
As we can see in~\parencite{angenendt}, this experiment was succesful.
\end{frame}

\begin{frame}[allowframebreaks]
\frametitle{References}
\renewcommand*{\bibfont}{\scriptsize}
\printbibliography
\end{frame}

\end{document}


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