Hi,

I just set up a little Mac application project that links to PodoFoo. This 
library looks really nice. 

What I’m trying to do in my little test app is extract a PNG image out of a PDF 
file. Extracting JPEGs is pretty straightforward. I see in one of the tests 
that there’s some code showing how you can save an image as a PPM. 

Is there any PNG export support? I was able to search the mailing list, it 
looks like there’s PNG import support. I see  PdfImage has the 
GetSupportedFormats() which only has JPEG as an entry for this PDF (though I’m 
certain that the source image was a PNG).  I think it would be great to be able 
to export images with alpha. 

Any help would be greatly appreciated.

Thanks!
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