
| Now let's create
a background that will be transparent so that a wallpaper background
of a web page will show through. Even though the background is transparent now, if we make it a Gif image now, the layers will flatten and the checkerboard areas will turn white. We could choose those white areas to be transparent during the export process, but that might be a problem if we had some white areas in the cartoon, like perhaps the pages of the book or if our cartoon was a person or animal with white teeth. Then those white areas would become transparent too. |
| So, let's go back
to the layers palette and create a new, empty layer. Name this layer something like 'bkgrnd' and drag this layer to the bottom of the layer stack. |
| Now we need to
pick a color that will be transparent in our final Gif89a cartoon. We
need a color that is not in the body of our cartoon and a color that
will not leave a "halo" of odd colored pixels around the outside of
it either.
To best accomplish
this, choose a light colored background if your cartoon will go on
a light colored wallpaper. [Note: For web
cartoons, use a color palette that is browser-friendly. Your images
will load faster and be more consistently colored across the most
popular browsers if you do. |
| Now fill the empty 'bkgrnd' layer with the color you chose in the step above. |
| Then if you are
satisfied with how everything looks, open 'Image' from the title bar
selections and choose 'Mode'.
Change the mode of your cartoon to 'Indexed Color'. When it asks if you want to flatten layers, choose OK. Then Export your cartoon to Gif89a format. During the Gif89a
export process, a dialog box will appear where you can use the eyedropper
tool to pick a color to be transparent. |