Instructions apply to PowerPoint 2019, 2016, 2013, 2010, and PowerPoint for Microsoft 365.
If you want to add it to all of your slides, add it to any slide.
SelectDesign>Format Background.
Or, right-choose the slide and selectFormat Background.
The Format Background pane opens.
SelectPicture or texture fill.
Locate the picture you want to use and selectInsert.
Set thetransparencylevel for the picture using the Transparency slider.
To remove the background image, pop kick open the Format Background pane and chooseSolid Fillor another option.
To avoid distortion, choose a horizontal format picture and one with highresolution.
Stretching the picture can result in a distorted image.