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Add Watermark to PDF

Stamp custom text or image watermarks across your PDF pages to protect your intellectual property.

Drag & drop your PDF file here

or click to browse • paste with Ctrl+V

Max file size: 50 MBClient-Side Processing (In-Browser)

What is Add Watermark to PDF?

Protecting confidential drafts, patent proposals, and proprietary sales decks from unauthorized sharing is essential. Freeallpdf Add Watermark to PDF allows you to stamp clear visual identifiers across your entire document.

Customize your watermark text (such as "CONFIDENTIAL", "DRAFT", "DO NOT COPY", or your company name), adjust font size, opacity, color, and diagonal rotation angle.

Watermarks are rendered directly onto page layers, clearly communicating ownership and sensitivity to every recipient.

How to Use Add Watermark to PDF

Follow these simple steps to process your files in seconds.

1

Upload PDF

Select the document you want to stamp with a watermark.

2

Configure Watermark

Type your custom text, set font size, opacity, color, and rotation.

3

Preview on Page

Inspect the live visual watermark preview on your document.

4

Download Watermarked PDF

Save your securely stamped PDF document with one click.

Key Features

Custom text stamping with adjustable opacity, font size, and color
Configurable rotation angle: diagonal 45°, horizontal, or vertical
Apply to all pages or select specific page ranges
Clean vector typography rendering
In-browser execution keeps confidential drafts on your local device

Why Use Our Add Watermark to PDF?

Intellectual Property Protection

Discourage unauthorized leaks of preliminary research and screenplays.

Audit Trail Clarity

Clearly demarcate "SAMPLE", "VOID", or "CLIENT REVIEW ONLY" across agreements.

Corporate Branding

Subtly reinforce brand ownership across publicly downloadable whitepapers.

Frequently Asked Questions

Everything you need to know about Add Watermark to PDF and document privacy.

Our engine applies the watermark as a native graphics layer across every page, making casual removal impossible in standard PDF viewers.