Protect PDF
Add real encryption to your PDF: a password is required to open it, and you control whether printing or copying is allowed. Uses AES-256, the strongest standard recommended for PDF.
Free Runs in your browser No sign-up
Drop your file here, or
browse — You can also paste a file from your clipboard.
Files stay on your device — nothing is uploaded.
How to use
- Add the PDF
Choose the document to protect.
- Set password & permissions
Enter a password and choose what readers may do.
- Protect & download
Download the encrypted file — test it by opening it.
Supported formats
- Input: PDF
- Output: PDF (AES-256)
Limits & notes
- AES-256 encryption (PDF 2.0 standard) — supported by all modern viewers.
- Keep your password safe: it cannot be recovered from the file.
- Protection is applied locally; the password never leaves your browser.