# [OS X TeX] transparency

Alessandro Languasco languasc at gmail.com
Sun Feb 24 04:53:02 EST 2008

```thanks, bruno, I'll try this way.
Alessandro

On 24/feb/08, at 10:15, Bruno Voisin wrote:

> Le 24 févr. 08 à 10:01, Alessandro Languasco a écrit :
>
>> So it would be great to pass a transparency factor to the
>> \includegraphics command,
>> but it seems to me that the graphicx package does not support
>> this option... so I was wondering if some other
>> package does.
>
> Not sure it can help, but still: the documentation of pdfTeX /usr/
> local/texlive/2007/texmf/doc/pdftex/manual/pdftex-a.pdf says on p. 40
>
> Since pdfTEX 1.30.0 also the alpha-channel of png images is
> processed if available; this allows
> embedding of images with simple transparency
>
> So it seems that if you can prepare a png version of the logo with
> the required transparency, then this transparency will be honoured
> once the png file has been included in the pdfteX output. Or did I
> misunderstand something?
>
> Bruno Voisin
>