[scribus] premultiplied alpha in PNG files

a.l.e ale.comp_06 at xox.ch
Fri Aug 13 09:14:10 CEST 2010

hi severn,

> I'm having a problem with PNG images with an alpha channel - the edge
> of the alpha channel leaves an ugly grey outline.  I think this is an
> issue of multiplying the alpha channel incorrectly - is there a way
> to avoid it in Scribus?  I've noticed it before, but never had it be
> as objectionable.
> Here's a PDF with the proper image on the left and the Scribus
> version on the right:
> www.lesbetes.com/alpha_test.pdf
> I made the PDF by opening the Scribus PDF in Illustrator and then
> inserting another copy of the image next to it and saving the whole
> thing as a new PDF.

basically, if you want somebody from the team to look at it, you should
post your request to the bug tracker:


... some developers read some mails in here, but they basically read all
the bug reports!

btw, you may also provide the PNG image...


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