NNWS Tools

Watermark PDF

Overlay text or an image watermark on pages.

Runs on your device

Drop a PDF to watermark

PDF file · never leaves your device

Built by nihmathullah.com — need a tool like this for your business?
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PDF & Docs tools

Merge & Split PDFCompress PDFSign PDFFill PDF FormsPDF ↔ ImagesPDF to TextWatermark PDFHeader & FooterResize PDF

About Watermark PDF

Watermark PDF is a free, private pdf & docs tool that lets you overlay text or an image watermark on pages. Like every tool on NWS Tools, it runs entirely in your browser — nothing is uploaded, there are no accounts, and there's no tracking. Just open it and go.

Frequently asked questions

Is Watermark PDF free to use?
Yes. Watermark PDF is completely free, with no account, sign-up or limits.
Are my files or data uploaded anywhere?
No. Watermark PDF runs entirely in your browser. Your files, text and numbers are processed on your own device and are never uploaded to a server.
Does Watermark PDF work offline?
Once the page has loaded, most tools keep working with no internet connection. NWS Tools is a Progressive Web App you can even install.
Do I need to install any software?
No installation is required — Watermark PDF works instantly in any modern browser on desktop or mobile.