Also, consider using either the fuzzy select tool (magic wand) instead of
scissors. You can fiddle with the threshold settings to get good results.
GIMP also provides a handy function in the Color menu called "Color to
alpha", by default it does exactly what you want to do (but will also remove
some white under your icons, so do the selection first anyways).
On Mon, May 10, 2010 at 08:09, Andrew <and...@alangdondavies.es> wrote:
> bob wrote:
> > Hi all.
> > I'm trying to edit an jpg image I've downloaded from the net.
> > This image:
> > http://creativenerds.co.uk/wp-content/uploads/2009/04/twitter-icos.jpg
> > As you can see, the image has a white background.
> > I want to isolate one of the illustrations and remove the white
> > First I use the scalpal tool to isolate one of the illustrations. Then I
> > either the select tool or the erasor to remove the white. Instead of
> > transparent area as a result, I get a grey.
> > (What is happening here)
> > To get around this, I first save the image as a png, then give the image
> > background layer with a random colour, save the image as an xcf and close
> > image. Then I open the xcf.
> > Again, I try to erase the white in order to get a transparent area.
> Again, I
> > get an grey as a result.
> > Obviously, I'm running into the boundaries of my understanding of image
> > formats here.
> > I'd love to know why I'm getting these results.
> > I'd also like to know how I can remove the white area and get
> > without closing and re-opening the image.
> Looks to me as though the image has no transparency in it.
> Menu: Layer > Transparency > Add alpha channel
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