All you need for this is PowerPoint (you do it in PowerPoint)
1. Click the picture that you want to create transparent areas in.
2. Under Picture Tools, on the Format tab, in the Adjust group, click Color.
3. Click Set Transparent Color, and then click the color in the picture or image that you want to make transparent.
1. Click the picture that you want to create transparent areas in.
2. Under Picture Tools, on the Format tab, in the Adjust group, click Color.
3. Click Set Transparent Color, and then click the color in the picture or image that you want to make transparent.