Keynote for Mac: Edit an image in Keynote

Edit an image in Keynote

After you add a photo or graphic to your presentation, you can crop it, remove parts you don’t want, and make adjustments to its background and exposure.

Mask (crop) a photo

You can hide unwanted portions of an image without modifying the image file.

  1. Double-click the image.

    The mask controls appear. The default mask is the same size as your image.

    Tip: To display the mask controls on a Mac with a Force Touch trackpad, force click the image (press firmly on the trackpad until you feel a deeper click).

  2. Use the controls to frame just the parts of the image you want to be visible.

    The mask controls over a photo.
  3. Click Done.

To mask an image with a shape, click the image to select it, choose Format > Image > Mask With Shape, then choose a shape. Drag the handles on the shape to adjust its dimensions.

Remove background and other elements from a photo

Use the Instant Alpha tool to make parts of an image transparent. This feature is useful for removing an unwanted background or color from an image.

  1. Click the image to select it, then, in the Format  sidebar, click the Image tab.

  2. Click Instant Alpha.

  3. On the image, click the color you want to remove, then drag slowly over it.

    As you drag, the selection grows to include areas that use similar colors. Click and drag multiple times to remove multiple colors.

    • Remove all instances of the color (even in other parts of the photo): Press the Option key while you drag.

    • Add colors back to an image: Press the Shift key while you drag.

  4. Click Done, or click Reset to undo all your changes and restore the image to its original state.

Adjust exposure, saturation, and other image settings

  1. Click the image to select it, then, in the Format  sidebar, click the Image tab.

  2. Use the controls to make adjustments.

    • Exposure: Changes the overall lightness or darkness of the image.

    • Saturation: Changes the richness of color in the image. Dragging to the right makes the colors richer or more vibrant.

    • Enhance: Automatically adjusts the image by spreading the red, green, and blue tones evenly across the histogram.

    To revert your adjustments, click Reset, or click Reset Image in the Adjust Image window.

  3. To see the image histogram and adjust more advanced features like contrast, highlights, shadows, sharpness, de-noise, temperature, and tint, click  the Advanced Adjustments button.

    The Adjust Image window with sliders for setting exposure, contrast, saturation, highlights, shadows, sharpness, de-noise, temperature, and tint.

You can open the Adjust Image controls in a separate window that you can move anywhere. Choose View > Show Adjust Image (from the View menu at the top of your screen).

To restore the image’s original settings, click Reset, or click Reset Image in the Adjust Image window.

To work with multiple images at the same time, hold down the Shift key while you click the images.

Tip: You can also add these buttons to the toolbar: Adjust Image, Instant Alpha, and Mask.

Published Date: Jun 27, 2019
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