Text boxes are often used in Microsoft Word, PowerPoint, Publisher, and Excel, especially if users want to enter text on a picture or any image that is not editable in Microsoft Office.

When you add an image to PowerPoint, the program usually adds its own suggested alt text, which you can change. It's helpful to add alt text to your slides' images for anyone using a screen reader.

Learn how to insert a watermark in Microsoft PowerPoint presentations. You can add a Draft text or an image watermark using the Slide Master.