You can add a border to a PowerPoint slide by adding a rectangle shape and removing the fill color, which will give the appearance of a border.

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

If you want to add a border or frame to an image in Microsoft PowerPoint or PowerPoint Online, you need to follow this detailed guide. Whether you want to add a black, dotted, white border, you can do ...

PowerPoint has a great set of special effects, graphics, animations, and template themes. There’s just one problem: Everybody else has the same effects, animations, and template themes that you have.