Change a slide background in Keynote on iPhone
You can change the background colour or image of individual slides in a presentation.
In the slide navigator, tap to select a slide or select multiple slides.
If you can’t see the slide navigator, pinch closed on the slide to zoom out.
Tap , tap Appearance, then tap Background.
Choose one of the following:
A colour or gradient designed to go with the theme: Tap Preset, swipe left or right to see all choices, then tap a colour.
Any colour: Tap Colour, swipe up or down to see all choices, then tap a colour. To preview colours on the slide, touch and hold a colour, then drag across the grid. A colour label appears for each previewed colour to help you reproduce an exact match. Release your finger to select a colour.
A two-colour gradient fill: Tap Gradient, tap Start Colour or End Colour, then tap a colour. To switch the gradient direction, tap Flip Colour. To change the gradient angle, drag the Angle slider.
An image: Tap Image, tap Change Image, then tap a photo; to insert an image from iCloud or another service, tap “Insert from”. To change how the image fills the slide background, tap an option:
Original Size: Places the image without altering the image’s original dimensions. To resize the image, drag the Scale slider.
Stretch: Resizes the image to fit the slide’s dimensions, which might change the image’s proportions.
Tile: Repeats the image in the slide background. To resize the image, drag the Scale slider.
Scale to Fill: Makes the image larger or smaller to leave no space around the image.
Scale to Fit: Resizes the image to fit the slide’s dimensions, but maintains the image’s proportions.
To create a tinted image, turn on Colour Overlay and tap Fill to select a tint colour. To make the tint more or less transparent, drag the Opacity slider.
Tap to close the controls.
When you change the background of a slide layout, it is applied to every slide that uses that layout.