User`s guide

Working With Text, Graphics, and Other Media 37

4 Select the “Save as File” checkbox.

5 Choose PDF from the Format pop-up menu.

6 Click Save As PDF.

7 Type a name for the PDF ﬁle and select a location in the Save dialog, and then click Save.

Working With Photo Cutouts (or Alpha-Channel Graphics)

An alpha channel is an area of transparency within a graphic ﬁle. Alpha channels can be used

to create transparency around irregularly shaped images, such as an image of a tree, so the

images appear without a colored box around them. Alpha channels can also be used to

create a transparent region within an image, so that the image acts as a frame. You can see

this effect in some of the Keynote themes, where you can place your own background

images behind a “mask” or a “picture frame.”

Choose Output

Options.

Click to save the ﬁle as a PDF.

Choose PDF.

Your photograph is placed behind the

alpha-channel window and can be

seen through its transparent region,

so it appears that the photo is in the

photo-corner frame.

This textured foreground with photo

corners is an alpha-channel graphic.

The area between the photo corners

is a transparent alpha channel.