Add Watermark to PDF

A Guide to Using Our Secure PDF Watermark Adder

In the digital age, a PDF is the standard for sharing professional documents. Protecting these documents is crucial, and a watermark acts as a digital stamp indicating ownership, status, or branding. Our free online tool is designed to make the process to **add a watermark to a PDF** simple, flexible, and completely secure.

Protection and Branding: The Two Faces of a PDF Watermark

This **PDF watermark adder** is built for two primary purposes, giving you full control for each:

• For Protection: Use the **Text Watermark** mode to add clear labels like "CONFIDENTIAL," "DRAFT," or "COPY." This is essential for controlling the distribution of sensitive documents. Adding a text watermark to a PDF can deter unauthorized sharing.
• For Branding: Switch to the **Image Watermark** mode to apply your company logo. This is a great way to **add a logo to a PDF**, turning your documents into powerful branding assets. For a professional result, always use a PNG file with a transparent background.

Mastering the Controls to Watermark a PDF Professionally

An effective **PDF watermark** should be visible without distracting from the content. Our tool provides a range of controls to help you find that perfect balance:

• Position Grid: Instantly place your watermark in one of nine key areas on the page. A corner position is great for a subtle logo, while a centered position offers maximum visibility.
• Scale, Opacity & Rotation: These sliders are your creative toolkit. A large, semi-transparent, and rotated text watermark provides strong protection. A small, opaque logo in the footer is perfect for clean, professional branding when you **watermark a PDF**.
• Page Selection: You don't have to apply the watermark to every page. Our flexible page range input allows you to apply your PDF watermark to specific pages (e.g., `1, 5, 8-10`), giving you granular control.

The Unbreakable Security Promise: Your PDFs Are Never Uploaded

When dealing with confidential documents, security is non-negotiable. Many online PDF tools require you to upload files to their servers, where you lose control over your data. Our **PDF Watermark** tool is different.

The entire process—from reading your PDF to applying the watermark—happens locally on your computer, inside your web browser. We use powerful JavaScript libraries like `pdf-lib.js` and `pdf.js` to perform all modifications on your device. Your PDF never leaves your machine, guaranteeing that its contents remain 100% private. It is the safest way to protect and brand your documents online.