Add Watermark to PDF – Text Watermarks

Add custom text watermarks to PDF documents. Useful for drafts and confidential files. Runs in your browser.

Click or drag & drop a PDF file

Max size: 50MB

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What is a PDF Watermark Tool?

A PDF watermark tool is essential for professionals, businesses, and individuals who need to protect or brand their PDF documents. This free online add watermark to PDF tool allows you to add customizable text watermarks to PDF files, making it easy to mark documents as confidential, add copyright notices, or brand documents with company names. Whether you're protecting sensitive documents, adding copyright information, or branding PDFs, this PDF watermark tool provides fast, secure watermarking without requiring software installation or account creation.

Perfect for professionals marking confidential documents, businesses branding PDFs, creators adding copyright notices, and anyone who needs to watermark PDF online or add text watermark to PDF. This PDF watermark tool processes all files locally in your browser—no data is sent to servers, ensuring complete privacy and security. No signup required, no usage limits, and works on all devices.

Key Features of Our PDF Watermark Tool

Customizable Text: Add any text as a watermark, such as "CONFIDENTIAL", "DRAFT", "COPYRIGHT", or your company name
Multiple Font Options: Choose from Helvetica, Helvetica Bold, Times Roman, or Courier fonts
Flexible Positioning: Place watermarks at center, corners, or create a mosaic pattern across the entire page
Color Customization: Select any color for your watermark text
Opacity Control: Adjust transparency from 5% to 100% to make watermarks subtle or prominent
Rotation Options: Rotate watermarks to any angle for diagonal placement
Page Range Selection: Apply watermarks to all pages or specific page ranges
100% Browser-Based: All processing happens locally—no uploads, no server storage

Use Cases for PDF Watermarking

Document Protection: Mark sensitive documents as "CONFIDENTIAL" or "FOR INTERNAL USE ONLY"
Copyright Protection: Add copyright notices to protect intellectual property
Branding: Add company logos or names to branded documents
Status Indicators: Mark documents as "DRAFT", "REVIEW", or "APPROVED"
Legal Documents: Add "NOT FOR DISTRIBUTION" or other legal notices
Academic Papers: Mark research papers or theses with author information

For related PDF operations, check out our add page numbers, rotate PDF, and compress PDF tools.

Frequently Asked Questions

Is this tool free?

Yes, this PDF watermark tool is completely free to use with no signup required. There are no usage limits, no hidden fees, and no account creation needed. The tool works entirely in your browser, ensuring fast performance and complete privacy. All watermarking happens locally—no data is sent to servers.

Does it work on mobile?

Yes, this PDF watermark tool is fully responsive and works on all devices, including smartphones and tablets. The interface adapts to smaller screens, and all features are available on mobile browsers. Perfect for adding watermarks to PDFs on the go.

Are my files secure?

Yes, your files are completely secure. All PDF processing happens locally in your browser—no files are uploaded to any server. Your PDFs never leave your device, ensuring complete privacy and security. The tool uses client-side JavaScript libraries to process PDFs entirely on your computer.

What watermark options are available?

You can customize the watermark text, font family (Helvetica, Times Roman, Courier), font size, color, opacity (5-100%), position (Center, Top-Left, Top-Right, Bottom-Left, Bottom-Right, Mosaic), and rotation angle. You can also apply the watermark to all pages or specific page ranges.

Can I apply watermarks to specific pages?

Yes, you can apply watermarks to specific pages by entering a page range. Use formats like '1-5' for pages 1 through 5, '1,3,5' for specific pages, or 'all' for all pages. The tool will only add watermarks to the pages you specify.

Will watermarking affect PDF quality?

No, watermarking does not affect the original PDF content quality. The watermark is added as a text layer on top of the existing content. All original text, images, and formatting remain unchanged. The watermark is applied with the specified opacity, so it doesn't obscure the document content.

What is the mosaic watermark option?

The mosaic option creates a repeating pattern of watermarks across the entire page, providing comprehensive document protection. This is ideal for marking confidential documents or adding copyright notices that cover the entire page surface.

Can I use this tool for password-protected PDFs?

No, password-protected or encrypted PDFs cannot be processed. You'll need to remove the password protection first using a PDF editor before using this watermark tool. The tool will display an error message if you attempt to process an encrypted PDF.

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