How to Add Watermark to PDF Online

Protecting your documents with a custom stamp is easy using InstantConvert.online. Follow these steps to brand your file:

1. Upload: Select your PDF file.
2. Customize: Type your text (e.g., "DRAFT", "COPYRIGHT"). Adjust the size, color, and rotation using the sliders.
3. Position: Simply Drag and Drop the watermark on the preview to place it exactly where you want.
4. Download: Click "Add Watermark" to apply the stamp to every page of the PDF.

Why Stamp Your PDF Documents?

Watermarking is a crucial step for security and professionalism:

• Copyright Protection: Prevent unauthorized copying by adding your name or company logo text. Learn more about Copyright Basics (Copyright.gov).
• Document Status: Clearly label files as "DRAFT" or "CONFIDENTIAL" so recipients know how to handle them.
• Digital Security: Watermarking is a key part of Digital Watermarking (Wikipedia) for identifying ownership.

This tool follows standard PDF specifications, ensuring compatibility with Adobe Acrobat and other viewers.

Need to edit before stamping? Try Split PDF or Merge PDF.

Client-Side Security

Unlike other sites that process your files on a server, our **Watermark Tool** uses secure **Client-Side** technology (WASM).

Your document is loaded into your browser's memory, stamped locally, and saved back to your device. It never travels over the internet.

Frequently Asked Questions