Microsoft has now added the image transparency options to Word, Excel, Outlook, and PowerPoint in the latest Office for Windows desktop Insider build. You can access them from the Format ribbon, or from the Right-Click > Format Picture menu. This feature allows you to show what is behind an image giving greater control when making edits to picture. It is important to note that this feature is designed to only work for one picture at a time. This Insider build also comes with the following bug fixes.