How to Add Watermarks to PDF Files
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Upload Your PDF
Click 'Select PDF File' and choose the PDF document you want to watermark from your device. The file will be loaded locally in your browser.
- 2
Customize Watermark Settings
Configure your watermark text, color, opacity, size, and rotation angle using the intuitive controls. Preview your original PDF while adjusting settings.
- 3
Add Watermark
Click 'Add Watermark' to process your PDF. The tool will apply the watermark to all pages and show you a real-time preview of the result.
- 4
Download Watermarked PDF
Review the watermarked PDF preview and download your protected document using the 'Download Watermarked PDF' button.
Key Features
Customizable Watermark Text
Add any text as a watermark with full control over content, positioning, and appearance
Advanced Styling Options
Customize watermark color, opacity (0.1-1.0), size (20-100px), and rotation (0-360°) to match your needs
100% Browser-Based
All processing happens locally in your browser - no server uploads, ensuring complete privacy and security
Real-time Preview
Preview both original and watermarked PDFs side-by-side before downloading the final document
What is PDF Watermarking?
PDF watermarking is the process of adding visible text or images to a PDF document to indicate ownership, confidentiality, or status. Our online PDF watermarker adds customizable text watermarks to all pages of your document, helping protect intellectual property, prevent unauthorized use, and provide visual indicators of document status. Watermarks can be used for various purposes, including marking documents as drafts, confidential, or for specific distribution.
Why Use Our PDF Watermarker?
- 1
Complete Privacy & Security
Your PDFs never leave your device. All watermarking happens locally in your browser using advanced JavaScript libraries, ensuring your sensitive documents remain private and secure.
- 2
Free & Unlimited
Add watermarks to as many PDFs as you need without registration, subscriptions, or hidden fees. No usage restrictions or limitations.
- 3
Professional Customization
Full control over watermark appearance with customizable text, colors, opacity, size, and rotation to match your branding or security needs.
- 4
Instant Results
Fast processing with immediate preview and download capabilities. No waiting for server processing or file uploads.
Frequently Asked Questions
Is it safe to watermark PDFs online?
Yes, our PDF watermarker is completely safe because your files never leave your browser. All processing happens locally on your device using client-side JavaScript, ensuring your documents remain private and secure.
Can I customize the watermark appearance?
Absolutely! You can customize the watermark text, color, opacity (0.1-1.0), size (20-100px), and rotation angle (0-360°) to achieve the perfect look for your documents.
Will watermarks be added to all pages?
Yes, the watermark will be applied to all pages of your PDF document automatically. The watermark appears consistently across the entire document.
Are there any file size limits?
No, there are no artificial file size limits. The tool processes PDFs entirely in your browser, so the only limitation is your device's available memory.
Do I need to install any software?
No installation required. The PDF watermarker runs entirely in your web browser using modern JavaScript libraries like PDF-lib, providing a seamless experience.