PDF Watermark

Add custom text watermarks to PDF documents online. Free PDF watermark tool with position, rotation, opacity, and styling controls.

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Upload PDF File

Drag and drop or click to select a PDF file (max 100 MB)

About PDF Watermarking

PDF watermarking is the process of overlaying text or images onto PDF document pages. Watermarks serve multiple purposes: protecting intellectual property, indicating document status (draft, confidential, approved), branding materials with company names or logos, and deterring unauthorized copying or distribution.

This tool adds text-based watermarks entirely in your browser using the pdf-lib library. Your files are never uploaded to any server, ensuring complete privacy and security for sensitive documents.

Watermark Options Explained

Text Content

Enter any custom text for your watermark, such as "CONFIDENTIAL", "DRAFT", your company name, or a copyright notice. Up to 100 characters are supported.

Font Size & Color

Adjust the font size from 10px to 200px. Pick any color using the color picker or enter a hex code. Combine with opacity to make watermarks subtle or bold.

Opacity

Control transparency from 1% (nearly invisible) to 100% (fully opaque). For readable documents, 15-40% opacity is typically ideal, making the watermark visible without obscuring content.

Rotation

Rotate the watermark from -180° to 180°. A -45° diagonal is the most common choice, as it spans across the page making it harder to crop out.

Position

Choose from 8 placement options: center, diagonal, all four corners, header, or footer. Each places the watermark at the corresponding location on the page.

Repeat Pattern

Enable tiling to fill the entire page with a repeated watermark pattern. This provides stronger protection against cropping and is common for highly confidential materials.

Common Uses for PDF Watermarks

Confidential Documents

Mark internal reports, financial statements, and sensitive business documents with "CONFIDENTIAL" or "INTERNAL USE ONLY" to remind recipients of their restricted nature.

Draft Review

Add "DRAFT" watermarks to documents under review to prevent them from being mistaken for final versions. This is standard practice in legal, academic, and corporate environments.

Copyright Protection

Protect creative works, photography portfolios, and ebooks with your name or copyright notice. Watermarks deter unauthorized redistribution and establish ownership.

Corporate Branding

Add your company name or slogan to presentations, proposals, and marketing materials. Subtle watermarks reinforce brand identity throughout distributed documents.

Privacy & Security

100% Client-Side Processing: Your PDF files are processed entirely in your browser. No data is uploaded to any server, and no copies are stored or transmitted.

No File Size Tracking: We do not log file names, sizes, or any document content. Your watermarking activity is completely private.

How to Use PDF Watermark

Open PDF Watermark

Navigate to PDF Watermark in your browser.

Upload your file

Click the upload area or drag and drop your file. It will be processed locally in your browser.

Configure settings

Adjust any available options such as quality, format, or output preferences.

Download the result

Once processing is complete, click Download to save the output file to your device.

Frequently Asked Questions

PDF Watermark is a free online document processing tool. Add custom text watermarks to PDF documents online. Free PDF watermark tool with position, rotation, opacity, and styling controls.