%%
%% The LaTeX Companion, 3ed
%%
%% Example 8-2-23 on page I-601 in "Image inclusion revisited".
%%
%% Copyright (C) 2022 Frank Mittelbach
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3c
%% of this license or (at your option) any later version.
%%
%% See
https://www.latex-project.org/lppl.txt for details.
%%
\documentclass{tlc3exa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{159.0pt}
%StartShownPreambleCommands
\usepackage{subcaption,adjustbox}
\newcommand\fitimage[1]
{\adjustimage{width=\linewidth}{#1}}
%StopShownPreambleCommands
\begin{document}
\begin{figure}
\centering
\subcaptionbox{A large cat}[.4\linewidth]
{\fitimage{cat}}
\qquad
\subcaptionbox{A small elephant}[.4\linewidth]
{\fitimage{elephant}}
\caption{Two animals}
\end{figure}
\end{document}
