Add Watermark to PDF — Free & Private

PDF watermarks are essential for protecting your documents, branding your content, and marking files as confidential or draft. Our free online PDF watermark tool allows you to add text or image watermarks to your PDF files quickly and securely, directly in your web browser. Whether you need to protect sensitive documents, add your company logo, or mark files as confidential, our tool provides professional watermarking capabilities without compromising document quality.

Watermarks serve multiple purposes in document management. They can protect intellectual property by discouraging unauthorized copying, brand documents with company logos or copyright notices, mark files as confidential or draft versions, and provide visual identification for document classification. Our PDF watermark tool supports both text and image watermarks, giving you complete control over appearance, placement, and opacity.

Why Add Watermarks to PDF Files?

Adding watermarks to PDF files offers numerous benefits for document protection and branding. Watermarks help protect sensitive information by making unauthorized copying more difficult, establish ownership and copyright through visible branding, mark document status such as draft or confidential, and provide professional presentation for business documents. Our tool supports flexible watermark placement including center, corners, or tiled patterns across pages.

The watermarking process preserves your original PDF content while adding a transparent overlay layer. You can customize watermark opacity to make it subtle or prominent, rotate watermarks for diagonal placement, adjust size and positioning, and choose to apply watermarks to all pages or only selected pages. This flexibility ensures your watermarked documents maintain professional appearance while serving their intended purpose.

Secure and Private Processing

All PDF watermarking happens entirely in your browser using client-side processing technology. Your PDF files never leave your device, ensuring complete privacy and security. This approach means no file uploads to external servers, no data storage, and no risk of unauthorized access to your sensitive documents. Whether you're watermarking confidential business documents or personal files, your privacy is guaranteed.

The tool works with PDF files of any size, from small documents to large reports and presentations. There are no file size limitations, no usage restrictions, and no registration required. Simply upload your PDF, choose your watermark type and customize its appearance, select pages if needed, and download the watermarked file with all your changes applied instantly. The process is fast, secure, and completely free.