Add text or image watermark to PDF online for free. Customize position, opacity, rotation, and font. Protect your documents with brand or copyright.
Use Watermark PDF — Free →Upload your PDF file, click Convert, and download the result instantly. No registration required, completely free.
Fast, secure, and private. Your files are processed in memory and never stored on our servers. Works on all devices and browsers.
All uploads are processed over HTTPS with 256-bit encryption. Files are automatically deleted after processing.
Yes — the tool supports both text watermarks (e.g. CONFIDENTIAL) and image/logo watermarks.
Yes, opacity is fully adjustable from barely visible to fully solid, along with position and rotation angle.
Yes, the watermark is applied consistently across all pages of the document.
Watermarks applied this way become part of the page content, so there isn't a one-click removal — start from your original unwatermarked file if you need a clean copy later.