Add Watermark to PDF
Add professional watermarks to your PDF documents. Perfect for marking drafts as confidential, adding company branding, or protecting your intellectual property.
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What is Add Watermark to PDF?
Add Watermark to PDF is a free, browser-based tool in our PDF Tools collection. Add professional watermarks to your PDF documents. Perfect for marking drafts as confidential, adding company branding, or protecting your intellectual property. Because every step runs locally in your browser using JavaScript and WebAssembly, your files never leave your device — there is no upload, no server, and nothing stored after you close the tab.
How to use Add Watermark to PDF
- Open the tool above — no account or install needed.
- Add your file or input directly in your browser.
- Adjust any available options to fit what you need.
- Run the tool and download the result instantly.
Why use our Add Watermark to PDF tool?
- 100% private — processing happens on your device, not a server.
- Free with no limits — no sign-up, no watermarks, no file-size caps.
- Works offline once the page has loaded.
- Cross-platform — runs on any modern browser, desktop or mobile.