Free PDF Watermark ToolAdd Professional Watermarks Instantly
Add professional watermarks to PDF files instantly with our secure online tool. No registration required, 100% client-side processing, and completely free forever. Perfect for confidential documents, drafts, and copyright protection.
Upload PDF to Add Watermark
Drag and drop your PDF file or click to browse - no file size limits
or drop your file here
Why Choose WatermarkPDF?
Simple, secure, and powerful PDF watermarking
🔒 Complete Privacy
Your files never leave your device. All processing happens locally in your browser, ensuring your sensitive documents remain completely private.
⚡ Lightning Fast
No uploads, no waiting, no server delays. Your PDFs are watermarked instantly using advanced browser-based processing technology.
✨ Professional Quality
Preserves the original quality of your PDF documents while adding professional-looking watermarks with precise positioning.
Perfect for Every Use Case
From business documents to academic papers, WatermarkPDF handles it all
💼 Business Documents
- ✨ Invoices and billing statements
- 📋 Contracts and legal documents
- 📊 Reports and presentations
- 🔒 Confidential memos
✍️ Content Creation
- 📖 E-books and digital publications
- 🎓 Course materials and handouts
- 🔬 Research papers and articles
- 👀 Sample documents and previews
⚖️ Professional Services
- ⚖️ Legal firm documents
- 💰 Accounting and tax forms
- 🏠 Real estate contracts
- 🏥 Medical records and reports
🎓 Education
- 📝 Student assignments and papers
- 👨🏫 Teacher resources and materials
- 📚 Academic publications
- 💡 Research proposals and grants
Why WatermarkPDF Stands Out
Discover what makes our tool the best choice for PDF watermarking
💰 100% Free Forever
No subscriptions, no hidden fees, no limits. Use it as much as you want.
⚡ No Registration Required
Start watermarking immediately. No accounts, no sign-ups, no hassle.
📱 Works Offline
Once loaded, works completely offline. No internet required for processing.
🌐 Cross-Platform
Works on Windows, Mac, Linux, and mobile devices. Any modern browser.
📏 No File Size Limits
Process any size PDF. Only limited by your browser's memory capacity.
⚙️ Batch Processing Ready
Process multiple documents quickly with our advanced processing engine.
How it works
Simple steps to watermark your PDFs
📤 1. Upload PDF
Select your PDF file from your device. No registration required.
🎨 2. Customize Watermark
Choose text, position, size, color, and opacity for your watermark.
💾 3. Download
Get your watermarked PDF instantly. Your file stays private.
Frequently Asked Questions
Everything you need to know about our PDF watermarking tool
Is WatermarkPDF really free?
Yes! WatermarkPDF is completely free to use with no hidden fees, subscriptions, or limitations. You can watermark as many PDFs as you want without any restrictions.
Are my files secure and private?
Absolutely! Your files never leave your device. All watermarking happens locally in your browser, ensuring complete privacy and security. We don't store, access, or transmit your documents.
What types of watermarks can I add?
You can add text watermarks with customizable font size, color, opacity, rotation, and position. Choose from preset text options like "CONFIDENTIAL" or enter your own custom text.
Do I need to create an account?
No account required! Simply upload your PDF, customize your watermark, and download the result. No registration, no email signup, no personal information needed.
What file sizes are supported?
There are no file size limits! Our tool works with PDFs of any size, from small documents to large multi-page files. Processing happens in your browser, so it's only limited by your device's memory.
Can I watermark multiple pages at once?
Yes! When you upload a multi-page PDF, the watermark will be applied to all pages automatically. You can also choose to repeat the watermark across the entire page for better coverage.
🚀 Ready to Watermark Your PDFs?
Join thousands of users who trust WatermarkPDF for their document security needs.