On Fri, Dec 20, 2019 at 11:00 AM Peter Rolf <indiego@gmx.net> wrote:

> Hi Hraban,
>
> PDF/X-1a:2001 doesn't support transparency. You have to use PDF/X-4(p)
> for that (the first X variant that supports transparency).
> PDF/A-2|3 may also be an option. These formats also support transparency.
>
>
> Peter
>
>
confirmed, this is ok.

\setupbackend[format=PDF/X-4p]

\starttext
\externalfigure[esel_kl.png]
\stoptext

>


-- 
luigi