How to Add Watermarks to PDF Documents for Security

The Purpose of Watermarking

A watermark is a faint design or text stamp applied over or under document pages. It is commonly used to indicate document status (e.g., 'DRAFT', 'CONFIDENTIAL'), identify ownership, or prevent unauthorized reproduction of copyrighted material.

Stamping Text vs. Image Overlays

Depending on your needs, you can use two main types of watermarks:

• Text Watermarks: Quick stamps specifying document status or recipient email (ideal for tracking leaks).
• Image Watermarks: Brand logos or signatures applied to document corners or centers.

Adding Secure Watermarks Locally

Uploading files to a remote server to add a watermark defeats the purpose of document security. Use our Online PDF Watermarking tool to apply customized text or image stamps locally, with control over angle, opacity, size, and page range.