# Add source to figure caption

How can I add a source to a figure? I need to add \ref, \cite or just free text. Something like that:

\begin{figure} [ht]
\centering
\includegraphics[width=0.95\textwidth]{res/figure.pdf}
\caption{Caption}
\source{\ref{},\cite{} or free Text}
\label{fig:gliederung}
\end{figure}


Should give me:

The source shouldn't appear in \listoffigures.

• Have you tried \caption[Caption]{Caption. Source: here the source of the picture}? Jan 23 '13 at 16:26

There are many ways to do this. The source could be put inside the caption. LaTeX puts the caption in one line, if it fits there. This can be prevented by \hspace{\linewidth} in the following example. When LaTeX tests the width by putting it in a \hbox, then \hspace is taken into account. LaTeX concludes that the caption does not fit into one line and by setting it in several lines, the line break is executed and the white space right after it (\hspace{\linewidth}) is ignored:

\documentclass{article}

\newcommand*{\captionsource}[2]{%
\caption[{#1}]{%
#1%
\\\hspace{\linewidth}%
\textbf{Source:} #2%
}%
}

\begin{document}
\begin{figure} [ht]
\centering
\captionsource{Caption}{ref, cite or free Text}
\label{fig:gliederung}
\end{figure}
\end{document}


Alternatively package caption provides an option singlelinecheck, where the testing for fitting into a line can be disabled, using possible multi-line mode always.

• What is the purpose of the asterisk (*) just after the command \newcommand ? Jul 10 '17 at 19:09
• @Randerson If a macro is defined via the star form \newcommand*, then the arguments must not contain empty lines or \par tokens. Omit the star, if you expect caption titles to contain paragraphs. Otherwise, TeX is able to throw an error message earlier, if the user has forgotten the closing curly brace of the argument. Jul 10 '17 at 19:12

I know it makes a lot of time from this post but I had the same problem and found the solution you where looking for. I will post it just in case someone founds it useful.

I took the idea from Gonzalo Medina's post A: How to write a source description under the loaded picture?.

Solution: load the caption package (i.e. write \usepackage{caption} at the preamble of your document) and add this line:

\newcommand{\source}[1]{\caption*{Source: {#1}} }


How to use it: The way I defined this command, it couldn't be more intuitive:

\begin{figure}
\includegraphics{./imageName}
\caption{Caption of the image.} \label{imageLabel}
\source{Source of the image.}
\end{figure}


How it works: The added line creates a new command \source{} with a single input parameter (your source). The * in \caption*{} prevents the figure caption to be accounted for LaTeX and shown in \listoffigures In fact if you type:

\begin{figure}
\includegraphics{./imageName}
\caption{Caption of the image.}\label{imageLabel}
\caption*{Source: Source of the image.}
\end{figure}


Style modification:

I personaly like having all my sources aligned to the right, so I usually define the command above like that:

\newcommand{\source}[1]{\caption*{\hfill Source: {#1}} }


Also the vertical spacing between Caption and Source can be modified adding a \vspace{} command like that:

\newcommand{\source}[1]{\vspace{-3pt} \caption*{ Source: {#1}} }


([+] value will add space and [-] value will reduce it)

I hope it helps!

• @Xavi in connection with the answer, how can I reduce the spacing between caption and source? I am using Memoir, but I do not think that it matters in the circumstances. Dec 13 '15 at 0:10
• Do make sure you use \usepackage{caption} at the start of your document! I skipped over that part the first time and it started displaying the star and doing other weird things. Leaving this here in case someone else forgets; maybe they'll see this comment. May 2 '18 at 19:41
• I encountered the same problem like @ProQ. This comment by Axel Sommerfeldt proved to be rather enlightening. May 28 '18 at 17:45
• Thanks for your feedback @ProQ and @Mr. Tao! I made some changes to better explain how to load the caption package.
– Xavi
May 30 '18 at 6:37
• Great answer, but somehow this is not working with Beamer. Anyone ran into the same problem? Aug 15 '18 at 14:35