On Tue, May 18, 2021 at 03:25:51PM +0300, Eli Zaretskii wrote:
> > Date: Tue, 18 May 2021 11:45:08 +0100
> > From:  Joe Corneli via "Emacs development discussions." <emacs-devel@gnu.org>
> > 
> > Hello, the attached SVG file was made with M-x org-latex-preview.  It
> > includes an embedded PNG file.
> > 
> > The source is this LaTeX-in-Org oneliner, together with the PNG.
> > 
> > $$\mathit{Hello} \includegraphics[width=2cm,natwidth=445,natheight=661]{/home/joe/tools_for_thought/Tft1st.png}$$
> > 
> > The generated SVG image displays correctly in Mozilla Firefox 88.0.1.
> 
> FWIW, I don't see the embedded PNG in Firefox, either.  Not even in
> the latest version 88 of Firefox.

Looking at the SVG (the source, I mean), this 'embedding' of the PNG
happens via an xlink, like so:

  xlink:href='/home/joe/tools_for_thought/Tft1st.png

I actually doubt You, Eli, have a directory /home/joe in your
computer (but I could be wrong :)

The resolution of that URL will, AFAIK, depend on quite a bit
of context (it is a path-absolute URL), but I might be wrong.

Cheers
 - t