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Posted on 2000-03-03
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Last Modified: 2010-04-03
I have to change a logo that has a background into a transparency.
I know how to do transparencies from scratch, but changing one into a
transparency that was not made that way from scratch elludes me.
Thank you.
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Question by:Joyangela
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forkbeard earned 100 total points
ID: 2582427
You need to get rid of the background without touching the main image/logo. You can do this a couple ways, but first make sure your image is on an editable layer not a background layer.  Double click on the layer and then after naming it you can procede.

Now you need to cutout your logo.  There are alot of ways to do this:

A) Clicking on the solid flat background color w/ the magic wand then deleting.

B) If you don't have a simple background color you can use the lasso tools and outlining the image and then inverse the selection ( Select:Inverse in the menu ).  Then delete.

C) Using the eraser to erase along the outside of the image.

Combinations of these steps work well.



Once you have cutout your image pick a color not found anywhere in you cutout image/logo and make a new layer.

1. Position this layer underneath the layer w/ your cutout image and then select the whole canvas and fill with the color not found in the logo. Unless you are planning to place the logo on a white background in the web page don’t use a light color.  Best to use a strong red or blue color for a black logo.  If done correctly your background color should meet your cutout without any traces of the original background.  If any traces exist go in with the eraser and take them out by hand.  Then flatten the layers.

2. Go into the menu at the top and switch to index color ( Image:Mode:Index Color )

3. Then export the image as GIF89a Export ( File:Export:GIF89a Export )

4. In the new window that pops up you will be able to select the background color w/ the eyedropper tool and the background disappears (turns grey to us).

5. Click OK and then save the file.


forkbeard

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