# Limit Font Size to 10pt in Caption

The styleguide of our faculty states that notes below figures must be in font-size 10pt.

I've skipped over various posts, but none of them answering the specific 10pt solution - only small or ultra-small is given.

My document looks as follows:

\documentclass[a4paper,12pt]{article}
\usepackage{fancyhdr}
\usepackage[hmargin=2.5cm, vmargin=2cm]{geometry}
\usepackage[english]{babel}
\usepackage[utf8x]{inputenc}
\usepackage{amsmath}
\usepackage[]{graphicx}
\usepackage{float}
\usepackage{eurosym}
\usepackage{amsmath} % for equations over multiple lines
\usepackage[hang,bottom]{footmisc} % Fußzeile bleibt am Boden %
\usepackage{natbib}  % havard style citation
\usepackage{grffile}
\usepackage{bbm}
\usepackage{longtable} % table over two pages
\usepackage{graphicx}
\usepackage{caption}
\usepackage{subcaption}

\usepackage[flushleft]{threeparttable} %note below table

\usepackage{url}
\makeatletter
\makeatother

\newtheorem{theorem}{Definition}[section]

\setlength{\parindent}{0pt}
\setlength{\footnotemargin}{0.8em}

\usepackage[titletoc,title]{appendix}
\usepackage[nottoc,notlot,notlof]{tocbibind}

\usepackage{setspace}
\setstretch{1.25} % don't modify the low-level parameter \linespread directly
\usepackage{hyperref}

\floatstyle{plaintop}
\restylefloat{table}

\begin{document}

\begin{figure}[H]
\centering
\caption{Title:This should be in normal 12pt text size}
\includegraphics[width=\linewidth]{example-image-a}
\caption*{Note: This comment should be in  10pt text size}
\end{figure}

\begin{table}[H]
\centering
\caption{This should be in normal 12pt text size}
\begin{threeparttable}
\begin{tabular}{lrr}
\hline\hline
\multicolumn{1}{c}{XXX}&\multicolumn{1}{c}{XXX}&\multicolumn{1}{c}{XXX (in \%)}\tabularnewline
\hline
A&$1$&$100$\tabularnewline
\text{\quad B}&$4$&$4.37$\tabularnewline
\text{\quad \quad C}&$24$&$0.37$\tabularnewline
\hline
\end{tabular}
\begin{tablenotes}
\item[]Note: This comment should be in  10pt text size

\end{tablenotes}
\end{threeparttable}
\end{table}

\end{document}

• As you use the caption package where's the problem? See docs. – TeXnician Oct 11 '17 at 9:16
• The exact font sizes of \large, \small and so on depend on the document class you are using and on the size specifications you did. A list of font sizes in pt for the article class can be found here: tex.stackexchange.com/a/24600/134144 – leandriis Oct 11 '17 at 9:26
• @leandris: Thanks for the comment! So since I use an article, \thefontsize\small should be fine. But how to use it only in a certain caption*{} or in the tableoites \begin{tablenotes}? – Jogi Oct 11 '17 at 9:32
• @jogi - Not quite: If you use the article document class with a main font size of 12pt, you must execute \footnotesize to obtain 10pt. – Mico Oct 11 '17 at 9:42
• @Mico: So I simply put \footnotesize in front of the text in the caption? Like \caption*{\footnotesize {Note: This comment should be in 10pt text size}} – Jogi Oct 11 '17 at 9:46

Since you're using the article document class with a main document font size of 12pt, issuing the directive \footnotesize will produce text at a 10pt size. And, since you're also loading the caption package, you should write

...
\begin{table} % or: \begin{figure}
\captionsetup{font=footnotesize}
\caption{...} \label{...}
...
\end{table} & or: \end{figure}
...


to generate captions typeset at, you guessed it, 10pt. Note that since the \captionsetup directive is issued within a table (or figure) environment, the scope of this directive is limited to the table (or figure).

If you wanted to change the caption size globally to 10pt, you should issue the directive

\captionsetup{font=footnotesize}


in the preamble.

• is there a way to set in pt instead? – Zach Smith Feb 12 '18 at 13:45
• @ZachSmith - Please post a new query. That way, many more people will see than if it's tucked away as a comment on some earlier answer. – Mico Feb 12 '18 at 13:48
• This answer is good - except that I was looking for explicitly setting a size in pts. It would be better if this answer was adjusted to show for sizing in pts (since I found my way here...) – Zach Smith Feb 12 '18 at 13:53
• @ZachSmith - The simple answer is that the caption package, as of now, does not offer a standard path to setting an absolute font size directly. Personally, I think that's exactly as it should be. Letting users specify arbitrary font sizes for captions is an open invitation to creating dreadful-looking captions. If you're indeed desperate to create such material, I suggest you post a new query. – Mico Feb 12 '18 at 13:58

The following in a MWE that globally sets both, the table notes and the notes below figures to 10pt, while leaving the actual captions of figures and tables at a size of 12pt.

\documentclass[a4paper,12pt]{article}
\usepackage[]{graphicx}
\usepackage{float}
\usepackage{caption}
\usepackage[flushleft]{threeparttable} %note below table

\makeatletter
\makeatother
\newcommand\fnote[1]{\captionsetup{font=footnotesize}\caption*{#1}}

\begin{document}

\begin{figure}[H]
\centering
\caption{Title:This should be in normal 12pt text size}
\includegraphics[width=\linewidth]{example-image-a}
\fnote{ Note: This comment should be in  10pt text size}
\end{figure}

\begin{table}[H]
\centering
\caption{This should be in normal 12pt text size}
\begin{threeparttable}
\begin{tabular}{lrr}
\hline\hline
\multicolumn{1}{c}{XXX}&\multicolumn{1}{c}{XXX}&\multicolumn{1}{c}{XXX (in \%)}\tabularnewline
\hline
A&1&100\tabularnewline