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What this tool offers
Add centered text watermark to every PPTX slide in your browser.
- Centered on every slide: Works with different aspect ratios.
- Text and opacity: Set watermark text and opacity.
- Size, rotation, color: Customize style quickly.
- Live preview: See result before download.
- Private: Client-side processing; no uploads.
Watermark placement and options
Watermark is centered on each slide and can be customized using text, opacity, size, rotation, and color.
Why add a watermark?
Useful for draft, confidential, and internal labels.
How it works
Upload PPTX, configure watermark, preview, and download.
Powered by browser APIs and client-side processing.
Frequently Asked Questions
Is my file secure?
Yes. Processing runs in your browser and files are not uploaded.
Where does the watermark appear?
Centered on each slide.
Can I customize the watermark?
Yes. Text, opacity, size, rotation, and color are configurable.
Will it apply to every slide?
Yes.
Can I use image watermark?
This tool supports text watermark only.