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Watermark PDF — free & online

Add a watermark to a PDF online for free. Stamp a text watermark such as DRAFT or CONFIDENTIAL across every page.

How to use Watermark PDF

Upload your file

Open the Watermark PDF tool and choose the file from your computer, or drag and drop it in.

Run Watermark PDF

Click the button and GenPrompt processes your file in seconds — no software to install.

Download the result

Download your finished file straight away. There are no watermarks and your file is processed securely.

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Watermark PDF — frequently asked questions

Is the Watermark PDF tool free?

Yes. Watermark PDF is free to use with a GenPrompt account — there is no watermark on your output and no per-file charge.

Is it safe to use Watermark PDF online?

Your files are processed securely over HTTPS and are not shared with third parties. Organisations with strict data-residency needs can also run the same engine in-house via a private licence.

Do I need to install software to use Watermark PDF?

No. Watermark PDF runs entirely in your browser. There is nothing to download or install.

Use Watermark PDF free

Create a free GenPrompt account and get Watermark PDF plus every other PDF tool.

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