How to Add a Watermark Like ‘Confidential’ to PowerPoint Slides

You need to add a watermark such as Confidential or Draft to your PowerPoint slides to protect sensitive information or indicate document status. PowerPoint does not have a dedicated watermark button like Word, but you can achieve the same effect using the Slide Master or by inserting a text box on individual slides. This article explains both methods, how to position the watermark diagonally across the slide, and how to apply it to all slides at once.

What a PowerPoint Watermark Does and What You Need Before Starting

A watermark is a faint text or image overlay that appears behind the main content of a slide. It typically says Confidential, Draft, Do Not Copy, or Internal Use Only. The watermark does not interfere with text, images, or charts on the slide because it is semi-transparent and placed behind other objects.

Before you add a watermark, decide whether you want it on every slide or only on specific slides. Using the Slide Master is the fastest way to apply a watermark to all slides in one action. If you only need the watermark on a single slide, use a text box directly on that slide.

You do not need any special add-ins or third-party tools. All features described here are built into PowerPoint for Microsoft 365, PowerPoint 2021, PowerPoint 2019, and PowerPoint 2016. The steps are identical on Windows 10 and Windows 11.

How to Add a Confidential Watermark to All Slides Using the Slide Master

The Slide Master controls the layout and background of every slide in your presentation. When you insert a watermark here, it appears on all slides that use that master layout.

1. Open the Slide Master view
   Go to View > Slide Master. The Slide Master tab appears on the ribbon. In the left pane, click the topmost slide thumbnail. This is the master slide. Any object you add here appears on all layouts below it.
2. Insert a text box for the watermark
   On the Slide Master tab, click Insert > Text Box. Click and drag on the slide to draw a text box. Type the watermark text, for example CONFIDENTIAL.
3. Format the text appearance
   Select the text. On the Home tab, set the font to a bold sans-serif typeface such as Arial Black or Calibri Bold. Set the font size to 60 pt or larger so the watermark is clearly visible behind slide content. Change the font color to a light gray or red.
4. Rotate the text box to create a diagonal watermark
   Select the text box. Press and hold the Shift key, then drag the rotation handle at the top of the text box left or right until the text is at a 45-degree angle. Holding Shift snaps the rotation in 15-degree increments, making it easier to get a consistent angle.
5. Make the watermark semi-transparent
   Right-click the text box and select Format Shape. In the Format Shape pane, click Text Options. Click the Text Fill icon (a capital A with a color bar). Expand Text Fill and select Solid Fill. Set the Transparency slider to 70% or 80%. The text becomes faint and will not block slide content.
6. Send the watermark behind other objects
   Right-click the text box. Select Send to Back. This ensures the watermark does not cover images or text on individual slides.
7. Position the watermark across the center of the slide
   Drag the text box so it stretches diagonally from the bottom-left to the top-right of the slide, or center it in the middle. You can resize the text box by dragging the corner handles.
8. Close the Slide Master view
   On the Slide Master tab, click Close Master View. The watermark now appears on every slide in your presentation.

How to Add a Watermark to a Single Slide Without Using the Slide Master

If you only need the watermark on one or two slides, use a text box directly on the slide instead of the Slide Master. This method is faster when you do not want the watermark on the entire presentation.

1. Insert a text box on the slide
   Go to Insert > Text Box. Click and drag to create a text box on the slide. Type the watermark text, such as DRAFT.
2. Format the text and apply transparency
   Select the text. On the Home tab, choose a bold font and a large size such as 72 pt. Set the font color to a light shade. Right-click the text box, select Format Shape, go to Text Options > Text Fill > Solid Fill, and set Transparency to 70%.
3. Rotate and position the watermark
   Hold Shift and drag the rotation handle to angle the text box 45 degrees. Drag the text box to the center of the slide. Right-click the text box and select Send to Back.
4. Copy the watermark to other slides if needed
   Select the text box and press Ctrl+C. Switch to another slide and press Ctrl+V. The watermark appears in the same position on the new slide.

Common Watermark Problems and How to Avoid Them

The watermark text is too dark and covers slide content

If your watermark text is opaque, it will hide text, images, and charts on the slide. Set the transparency to at least 70% in Format Shape > Text Options > Text Fill. If the watermark still appears too dark, increase transparency to 85%.

The watermark does not appear on new slides added after the master edit

When you add a new slide after closing the Slide Master, the slide uses the default master layout. If you inserted the watermark on the master slide correctly, new slides automatically include it. If the watermark is missing, go back to View > Slide Master and verify the text box is on the topmost master slide, not on an individual layout.

The watermark appears on the title slide but you want it only on content slides

By default, the Slide Master applies to all layouts including the title slide layout. To remove the watermark from the title slide only, go to View > Slide Master. In the left pane, click the title slide layout (usually the second thumbnail). Select the watermark text box and press Delete. Close Master View. The title slide now has no watermark while all other slides retain it.

The watermark text is pixelated or blurry

If you use a very small font size and then enlarge the text box, the text may appear pixelated. Always set the font size to at least 60 pt before rotating or resizing. For a sharper watermark, use a vector-based format such as WordArt instead of a raster image.

Item	Slide Master Method	Single Slide Method
Apply to	All slides automatically	Only the current slide
Time to set up	2-3 minutes	30 seconds per slide
Ease of editing later	Edit once in Slide Master, updates all slides	Must edit each text box individually
Risk of missing slides	None if placed on master slide	High, you must copy manually
Best for	Entire presentations with a consistent watermark	One-off slides or selective use

You can now add a Confidential or Draft watermark to any PowerPoint presentation using either the Slide Master or a direct text box. The key settings to remember are 70-80% transparency and sending the text box to the back of the slide. For presentations that require a watermark on all slides, always use the Slide Master to avoid repeating the work. If you need a watermark that changes for each slide, such as a date or reviewer name, consider using the Header and Footer feature under Insert > Header & Footer instead of a static text box.