[tex4ht] disable dvipng on preexistent png images?

Michal Hoftich michal.h21 at gmail.com
Fri Jan 17 14:03:38 CET 2020

Hi Giuseppe,

> After some upgrades, I've a problem during htlatex compiling.
> It seems that dvipng also wants convert already existing png images...
> Also, during the conversion I get this warning: dvipng warning: at (20,732) unimplemented \special{em: graph icons/pcore/project_criterion.png,72bp,72bp} ]
> on all png images.>

this issue was fixed in TeX4ht sources some time ago, but it seems
that Miktex still doesn't have correct files updated.
I think it can be fixed using this answer:

Best regards,

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