Password protect a PDF
Encrypt a PDF with AES-256 and an open password, plus optional print/copy restrictions.
Runs on your device — never uploaded
Drop a file here or click to browse
Accepts .pdf. Nothing is uploaded.
How to password protect a PDF
- Add your PDF
Drop the document you want to protect.
- Set a password
Choose the password readers must enter, and optionally disallow printing or copying.
- Download
Your encrypted PDF is ready. Keep the password somewhere safe.
Frequently asked questions
What encryption is used?
256-bit AES (PDF 1.7 / ISO 32000-2), the strongest level supported by standard PDF readers.
Can I recover the password later?
No. Nothing is stored anywhere. If you forget it, the file cannot be opened.
Do restrictions actually stop copying?
Restrictions are honoured by well-behaved readers but can be stripped by anyone with the open password. Use them as a hint, not as security.