How to change and format the background of your PowerPoint slides to custom designs

You can change the background of your PowerPoint slides using the "Format Background" feature located in the "Design" tab.
TechRepublic

How to Use Gemini (Formerly Duet AI) to Create Images for Slides & Backgrounds

How to Use Gemini (Formerly Duet AI) to Create Images for Slides & Backgrounds Your email has been sent Gemini lets you describe an image in text to create images in Google Slides or generate a ...