Forum: Inkscape Quick Note & Question

F812b5469f097cef62a67a629c465962?d=identicon&s=25 Arlo Barnes (arlo_b)
on 2014-02-26 09:25
(Received via mailing list)
I was preparing to vectorise some images from a website, and to try to
save
extra steps I decided not to save the images and drag'n'drop (or Open,
or
Import) them into Inkscape, but to see if I could not just copy the
images
to the clipboard (in Google Chrome there is a right-click option, 'Copy
Image') and paste into Inkscape.

It worked, but the transparency in the PNGs turned to black; apparently
not
just a display issue, because all the raster extensions (that I
understood
how to use) acted as if it was a regular opaque black, and
Extract/Export
produced opaque black pixels also.
This would not be a problem since I was just using the image for
reference,
except that several of the images were originally black where not
transparent, so I ended up with a solid black rectangle. I tried
downloading and importing the images as I would normally do anyway, and
this time the transparency was treated properly.

Therefore this is not a problem for me, it just seemed like something I
ought to understand the reason behind. A quick search shows that people
have had related issues in other contexts, due to the fact that
transparent
pixels in PNG are black by default or something (so the colour can be
0,0,0,0?).

Anyway, I thought someone here might be interested to hear about it, or
knows more.

Thanks!
-Arlo James Barnes
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