Add password protection to PDF documents using AES-256 encryption. Set user and owner passwords.
Drop a PDF to protect
or click to browse
100% browser-based — no server uploads, no cloud processing
Free forever — no account, credit card, or subscription required
Works on any device — desktop, tablet, and mobile
Supports PDF, DOCX, DOC, and all major document formats
Results available in seconds — no server queue or wait time
Files cleared immediately after processing — maximum privacy
Document sharing and professional distribution
Print preparation and prepress publishing
Legal, compliance, and contract documentation
eBook and formal report distribution
Use PDF/A-1b for documents requiring long-term archival compliance
Reduce size by downsampling images to 150 DPI for screen, 300 DPI for print
Apply AES-256 password encryption for sensitive PDF documents
Use named bookmarks and structured headings for documents over 20 pages
Drag & drop your file or click to browse
Files are processed instantly in your browser
Save your converted or processed file
Yes, completely free. No usage limits, no watermarks, no account required.
Your files are processed entirely in your browser using client-side code. They never leave your device and are never uploaded to any server.
PDF Protect works with all major file formats: PDF, DOCX, DOC, and most document formats.
Free, instant, and 100% private. Your files are processed locally in your browser.