The "Remove Background" tool works on all images in PowerPoint, regardless of whether it's one pasted onto a slide, uploaded ...

Let us talk about this from a more detailed perspective. After firing up the Format Background section, we now suggest clicking on Picture or texture fill. Once this is done, you should now see ...

Prepare your image in your graphics software and size it to the same height as your slide and a bit longer. (Click for larger image). One of the interesting but not so obvious things that you can do ...