On Thursday, 31 Aug 2017 at 09:44, Luca Ferrari wrote:

[...]

> Thanks, it provided me a good hint, so that now my slide is as follows
> (I nuked the list):
>
> ** My slide
> #+ATTR_LATEX: :width 0.2\textwidth
>  [[./images/debian.png]]
>  [[./images/redhat.png]]
> [[./images/cisco.png]]
> [[./images/skype.png]]
>
> The above applies to all the images at once (I can confirm in the case
> of a list you have to apply it to every item).

So, does this do what you wanted or not?  The other thing you can do is
globally set org-latex-image-default-width, for instance.

> Anyway, I suspect I'm running a quite old org-mode: 9.0.2.
> Try to update it now.

No need as such; 9.0 is new enough for this type of situation.  I was
concerned you were using 8.x or even older.

-- 
: Eric S Fraga via Emacs 26.0.50, Org release_9.0.10-716-g7a247b