Encrypt PDF
Apply AES-256 encryption to a PDF for strong file-level security. Specify open and owner passwords to control both access and usage permissions in a single operation.
- 1Upload the PDF you want to encrypt
- 2Enter the open (user) password — required to view the document
- 3Enter the owner password — required to change permissions (can be different)
- 4Click 'Encrypt PDF' to apply AES-256 encryption
- 5Download the encrypted PDF and store both passwords securely
- Apply AES-256 encryption to a confidential business acquisition document
- Encrypt a personal medical record PDF before storing it on a shared network drive
- Encrypt a signed NDA before sending via unsecured email
- Add AES encryption to a financial report before sharing with external auditors
Related Tools
Protect PDF
Add an open password to a PDF so recipients must enter it before viewing the document. Set a strong password and the PDF will be unreadable to anyone without it.
Unlock PDF
Remove the open password from a PDF you have legitimate access to. Enter the current password and download an unlocked copy you can share or work with without entering credentials each time.
Decrypt PDF
Remove AES encryption from a PDF using the owner or user password, producing an unencrypted copy. Useful when you need to process a secured PDF with tools that require an unencrypted input.
PDF Permission Password
Set an owner/permissions password on a PDF to control what users can do: restrict printing, copying of text, commenting, or form filling — without preventing them from opening the document.