Add Watermark to PowerPoint

The usual advice is to put the watermark in the slide master, which is fiddly and easy to get wrong. This writes a single text shape onto each slide instead — visible, consistent and easy to remove.

Choose the wording, position, colour and opacity, and download. Running it again replaces the previous watermark rather than stacking a second one on top.

PowerPoint Watermark & Slide Numbers

Stamp a draft or confidential watermark on every slide, add slide numbers, or both — without touching the master.

How it works

This utility runs locally in your browser for privacy and speed.

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Frequently asked questions

Can I use it on an existing deck without changing anything else?
Yes. The watermark is added as a shape on each slide, so your text, layout and master are untouched. To remove it, run the tool again with a different wording or delete the shapes named AI Tools Watermark.
Do I have to add a watermark to get slide numbers?
No — slide numbers are a separate option. Turn the watermark text off and you get just the page numbers.

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