Quick summary
Adding a watermark to PowerPoint slides is done through the Slide Master, ensuring the watermark appears consistently on every slide. You can use a text box or logo image, adjust transparency, and send it to the back so it doesn't obstruct your content.
Steps
- Go to the View tab in PowerPoint.
- Click "Slide Master" located at the Master Views tab.
- Click the top master slide (first slide in the list).
- Go to the Insert tab.
- Click Text Box (or Pictures if using a logo).
- Insert the photo of your logo.
- Right-click your logo and select Format Picture.
- Format it: set a light gray color, large font size, increase transparency via Format Shape → Text Fill → Transparency, and optionally rotate it.
- Right-click your watermark and select "Send to Back".
- Go to the Slide Master tab.
- Click Close Master View.
- Your watermark now appears on all slides.
