From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nicolas Goaziou <mail@nicolasgoaziou.fr>
Subject: Re: Right way to add special processing to images?
Date: Thu, 12 Jan 2017 20:59:24 +0100
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	(Kaushal Modi's message of "Thu, 12 Jan 2017 16:53:38 +0000")
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To: Kaushal Modi <kaushal.modi@gmail.com>
Cc: emacs-org list <emacs-orgmode@gnu.org>

Hello,

Kaushal Modi <kaushal.modi@gmail.com> writes:

> I have this elisp function that I run in org-export-before-processing-hook
> that coverts a pdf to png where that png file is already linked in the org
> file. Just that the png file did not exist to begin with; it is converted
> from pdf at the time of exporting. [Code is at the end of this email.]
>
> But for that you work, need to add my special keyword "convertfrompdf t"
> and I chose "#+HEADER" just before the image link to do that.
>

[...]

> So the question is: Is using #+HEADER for this a good idea? Would the org
> devs just a better way to do the same? I basically need to be able to
> control per image link if that linked image foo.png needs to be converted
> from a foo.pdf.

I would simply use a comment with some specific pattern instead of
messing with Org syntax.

For example, I use the following comments

  # =C2=A9 Author "title" licence

just before image links so as to mark them, collect them and build some
special page at the end of a slide with the information.


Regards,

--=20
Nicolas Goaziou