How to Make a Background Picture in Powerpoint Download Article Download Commodity The Format Background utility in PowerPoint allows you to select an image from your computer or online to use as the background for your slide. You can set this background to multiple slides at in one case, or apply information technology to your entire presentation. Yous tin can as well add effects to the groundwork image to give it a bit of flair. If you aren't able to change the background elements, yous may have to edit the slide main. 1 Open your PowerPoint presentation. You lot can add together graphics to the background of any slide in your PowerPoint presentation. Open the presentation y'all want to