Protect PDF
Add password protection to your PDF files for security.
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Browser Limitation Notice
True PDF password encryption requires server-side processing and is not available in browser-based tools due to security and technical limitations.
Recommended alternatives:
- Adobe Acrobat - Professional PDF software with full encryption support
- PDFtk - Free command-line tool for PDF manipulation
- LibreOffice - Free office suite with PDF encryption
- Online services - iLovePDF, Smallpdf (with server-side processing)
Drag & drop your file here
or click below to browse
Max file size: 50MB
Your files are processed locally and never uploaded to any server