Because the Set Transparent Color tool can treat only one color as transparent, these edge (or border) pixels, which appear to be the same color as the background, are not set to transparent.
This behavior can also occur if the background color is not really one color, but a mixture of two or more colors.
However, if you are using a Windows Bitmap image, you must set the transparency of the background manually before you save the image in a format suitable for use in a PowerPoint presentation.
If you are using other image editing software, please consult that product's manual and help files for directions about how to make a color transparent.
To use PhotoDraw to save an image for use in a PowerPoint presentation, follow these steps:
- Start PhotoDraw and open the image that you want to use in your PowerPoint presentation.
- On the File menu, click Save for Use In.
- In the first step of the wizard, click In a Microsoft PowerPoint or similar slide presentation, and then click Save.
- In the Save As dialog box, name your image, and then click Save.