You should probably rather open an issue in pandoc-crossref (though I don't
know if its a bug or just a question):

https://github.com/lierdakil/pandoc-crossref/issues

Otherwise here is a trick you may try:

If this is LaTeX the following might help:

1.  Near the top of your markdown file or in a header-include[^1] put this:

        \newenvironment{hideTable}{%
            \let\toprule\relax%
            \let\midrule\relax%
            \let\bottomrule\relax%
        }{}

        \newenvironment{smallText}{\small}{}

    I'm not sure about the exact font size command needed.

2.  Where you want your side by side material use this:

        `\begin{hideTable}`{=latex}

        |
        |-----------|-----------
        | ![alt-text](img-a.pdf)  | ![alt text](img-b.pdf) 

        `\begin{smallText}`{=latex}

        Fake caption text

        `\end{smallText}`{=latex}


        `\end{hideTable}`{=latex}

However note that these are non-floating images since last time I looked
floating figures didn't work inside tables, and conversely captions don't
work with non-floating images, so you might have to do some mysterious
things to have this show up in your list of figures. I have only ever used
this to place pieces of text and their translation side by side.

In HTML you might hide a table with CSS, i.e.

1.  Where you want the side-by-side stuff:

        :::hideTable

        |
        |-----------|-----------
        | ![Caption A](img-a.pdf) | ![Caption B](img-b.pdf)

        Fake caption text

        :::

2.  Arrange for some CSS which hides the table border to be included in
your document header[^2], minimally:

        div.hideTable table {
            border-collapse: collapse;
        }

    Perhaps also

        div.hideTable p {
            text-size: small
        }

    Note that if you have other CSS in effect which e.g. sets background
colors or borders on table rows you will need to disable that too.

[^1]: https://pandoc.org/MANUAL.html#option--include-in-header

[^2]: https://pandoc.org/MANUAL.html#option--css


Den lör 10 apr. 2021 19:59Emil Tywoniak <emil.tywoniak-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> skrev:

> Hi,
> I'd like to have two subfigures side-by-side. I'm using the
> pandoc-crossref filter method of subfigures. I tried turning them into a
> subsubfigure, and also the column layout method as described in
> https://bookdown.org/yihui/rmarkdown-cookbook/multi-column.html . Does
> anybody know a way?
> Thanks for your contributions to the pandoc paradigm
> Emil
>
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