Protect PDF
Add password protection and watermarks to PDFs
About Protect PDF
Protect PDF lets you secure your documents with password protection and professional watermarks, all processed directly in your browser. Whether you are sharing sensitive files, protecting intellectual property, or adding branding to documents, this tool gives you complete control over your PDF security without uploading files to external servers.
Perfect for business professionals, educators, and organizations that need to safeguard confidential information, prevent unauthorized copying, or maintain brand consistency across documents. Process unlimited PDFs with complete privacy-everything stays on your device.
How to use Protect PDF
Upload Your PDF
Select one or multiple PDF files from your device. Files are processed locally and never leave your browser.
Configure Protection
Set passwords, add watermarks, choose security permissions, and preview the results in real-time.
Download Protected PDF
Download your secured PDF instantly with all protection and watermark settings applied.
Pro Tips
- Use strong, unique passwords for owner protection to ensure your security settings cannot be easily bypassed.
- Add semi-transparent watermarks with 30-40% opacity to maintain document readability while preventing unauthorized copying.
- Test printing permissions after adding watermarks to verify the document appears correctly when printed.
- Batch process similar documents together to apply consistent branding and security policies across your entire organization.
Key features of Protect PDF
Password Protection
Set owner and user passwords to restrict opening, printing, copying, and editing of your PDF documents.
Custom Watermarks
Add text or image watermarks with adjustable opacity, rotation, and positioning across all pages.
Batch Processing
Apply protection and watermarks to multiple PDFs simultaneously for efficient workflow management.
Preview Before Download
View your protected PDF with watermarks applied before saving to ensure everything looks correct.
Multiple Watermark Styles
Choose from diagonal, horizontal, or custom watermark layouts to match your branding needs.
Security Options
Control permissions for printing, copying, and modifications while maintaining full access control.
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