Free Protect PDF
Encrypt a PDF with modern AES-256 protection. A temporary copy runs through an isolated processor and is deleted as soon as your download is delivered.
Choose PDF files
Drop files here, or choose them from your device.
Up to 100 MB per file · deleted after processingHow it works
- Choose one PDF
- Set a strong opening password
- Download and test the encrypted copy
Short-lived by design
This tool uses open-source processors in a private temporary workspace. The workspace is deleted when processing finishes or fails, and the file is never kept as an account document.