Maybe there are other options, but I think the canonical way is to use the
variable `org-image-actual-width’. The help mentions some ATTR_XXX options, so
you may find more answers there!

Dominik

Colin Baxter <m43cap@yandex.com> writes:

> I seem to remember that the option
>
> #+ATTR_ORG: :width 100
>
> could scale the display of an image in an org-mode file. This no longer
> works - perhaps it never did. How should I scale an image display in an
> org-mode file (not exported)?
>
> Best wishes,
>
> Colin Baxter.