Although you can search for pictures on Google Images or Bing, these pictures show in web browsers, and even then you cannot use most pictures in your slides since that would be a copyright violation. Fortunately, PowerPoint provides an option to search for pictures on Bing, which makes sure that you find Creative Common pictures so that you don’t end up being on the wrong side of the law. Even better, this Bing option shows picture search results directly within PowerPoint.
Learn how to insert pictures from Bing in PowerPoint 2016 for Windows.