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.
To change the background of all the slides that use the same master slide, apply the change to all slides that use the master.