PDF Watermarker

Add text or image watermarks to your PDF documents. Protect your content and brand your documents professionally.

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Why use PDF Watermarker?

Adding watermarks to PDF documents is essential for protecting intellectual property, branding documents, and marking confidential information. Whether you're a business owner sharing proposals, a photographer protecting your work, or a professional marking documents as drafts or confidential, watermarks provide a clear visual indicator of ownership and status.

Watermarks serve multiple important purposes. They protect your content from unauthorized use by clearly identifying the document's origin or status. For businesses, watermarks help maintain brand consistency across all documents while protecting sensitive information. For creative professionals, watermarks prevent unauthorized distribution of work while still allowing potential clients to preview content.

Traditional watermarking methods often require expensive software like Adobe Acrobat or complex online services that upload your files to their servers. This creates privacy concerns and potential security risks, especially when working with confidential documents. Our PDF Watermarker eliminates these concerns by processing everything locally in your browser, ensuring your documents never leave your computer.

Our tool supports both text and image watermarks, giving you flexibility in how you mark your documents. Text watermarks are perfect for adding labels like "CONFIDENTIAL", "DRAFT", or "SAMPLE", while image watermarks allow you to add logos or custom graphics. You can control the position, opacity, and size of your watermarks to achieve the perfect look without obscuring the document's content.

The watermarking process is fast and efficient, applying watermarks to all pages of your PDF simultaneously. This saves significant time compared to manually watermarking each page in traditional software. The watermarks are embedded directly into the PDF, making them part of the document structure and ensuring they appear consistently across different PDF viewers.

🔒Privacy & Security

Zero Data Logging: Your data is processed 100% locally in your browser and never sent to our servers.

All processing happens client-side using advanced web technologies. Your files, data, and personal information remain completely private and secure. We don't store, log, or transmit any of your information. Once you close the browser tab, all data is cleared from memory.

💡Pro Tips & Advanced Use Cases

  • Protect confidential documents by adding "CONFIDENTIAL" or "PRIVATE" watermarks before sharing.

  • Brand your business documents with your company logo as a watermark to maintain professional appearance.

  • Mark draft documents with "DRAFT" or "FOR REVIEW" watermarks to prevent accidental use of unfinished work.

  • Use diagonal watermarks for better visibility without completely blocking document content.

  • Adjust opacity to make watermarks subtle enough not to interfere with reading but visible enough to serve their purpose.

  • Apply watermarks to all pages of multi-page documents to ensure consistent protection throughout.

Frequently Asked Questions

Is my PDF file secure during watermarking?

Absolutely. All watermarking happens entirely in your browser using client-side JavaScript. Your PDF file never leaves your device, never gets uploaded to our servers, and we cannot see or access any of your documents. This ensures complete privacy and security.

Can I remove watermarks after applying them?

Watermarks applied with our tool become part of the PDF document structure. While they can be difficult to remove completely, it is possible with advanced PDF editing software. For maximum protection, consider using PDF encryption in addition to watermarks.

What image formats are supported for image watermarks?

Our tool supports common image formats including PNG and JPG/JPEG. PNG format is recommended for watermarks with transparency, while JPG works well for photographic watermarks.

Can I apply watermarks to specific pages only?

Currently, our tool applies watermarks to all pages of the PDF. This ensures consistent protection and branding throughout the document. If you need page-specific watermarks, you can split your PDF first, apply different watermarks, and then merge them back together.

Related Tools

Explore more PDF Tools that might help with your workflow:

BolehTools

BolehTools is a comprehensive, free online platform offering professional-grade utilities for PDF manipulation, image processing, and JSON formatting. Our browser-based tools process all files locally on your device - ensuring complete privacy, security, and data protection. No account registration, no file uploads to servers, no hidden fees. Perfect for professionals, students, developers, and anyone who needs reliable document and image processing tools. All tools are 100% free, work instantly in your browser, and support batch processing for maximum productivity. Made with care in Malaysia for users worldwide.

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Last updated: January 17, 2026

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