Apple Keynote '09 - Manual (Page 75)

Chapter 5 Working with Images, Shapes, and Other Objects 75
Automatically Reducing Images to Fit Your Slides
By default, if an image you place on a slide is larger than the slide, Keynote scales
down the image to fit the slide, in a process called downsampling. A downsampled
image has fewer pixels than the original, so some of the image information is removed.
Images in JPEG format remain JPEG images; other formats are converted to TIFF. After
an image has been downsampled, you can’t restore it to its original size by clicking
Original Size in the Metrics inspector. To avoid downsampling and use images at their
original size, turn off automatic downsampling in Keynote preferences.
To turn off automatic downsampling of images:
1 Choose Keynote > Preferences, and then click General.
2 Deselect the checkbox “Reduce placed images to fit on the slides.”
If you intend to greatly enlarge or reduce a graphic’s dimensions, consider converting
it to a PDF file before bringing it into Keynote. PDF files don’t lose their crispness when
they are significantly resized. Other file types may not retain their clarity as well when
they are enlarged or reduced.
Tip:
∏
You can also convert an image on your desktop to a PDF file by using the Grab
application. Open Grab (it’s in the Utilities folder in the Applications folder on your hard
disk). Choose Capture > Selection, and then select the image you want to make into a
PDF file. Choose File > Print, and then click Preview to save the image as a PDF file.
Replacing Theme Images with Your Own Media
The photos you see featured in each Keynote theme are actually media placeholders.
By dragging your own images or movie files to these placeholders, your media is
automatically sized, positioned, and framed to fit the slide’s theme.
To test whether the media on a slide is a placeholder, let the pointer rest over it
and see if a help tag appears instructing you to drag your own media file to the
placeholder.
Here are ways to work with media placeholders:
To replace a media placeholder with your own image, movie, or audio file, drag it from
m
the Media Browser, the Finder, or another application to the placeholder.
To resize or reposition your image within a media placeholder, click the Edit Mask
m
button that hovers over the image after you’ve dropped it onto the placeholder, and
then do any of the following:
To resize your image within the placeholder, drag the resize handle above the
Edit Mask button.
To reposition your image within the placeholder, position the pointer over the image (the
pointer may appear as a hand), and then drag the image to position it where you want.