PDF Password Protector

Add a password and set printing/copying permissions with real AES encryption — all in your browser.

PDF file

Open password

Owner password (optional)

Encryption

Confirm open password

Allowed actions for the reader

Allow printing

Allow copying text and images

Allow editing the document

Allow comments and annotations

Allow filling in form fields

Allow screen-reader access (accessibility)

Allow page assembly (insert, rotate, delete)

How it works

AES-256 is the modern standard (PDF 2.0 / ISO 32000-2). AES-128 and RC4-128 are offered for very old viewers only.
The open password is required to view the file. The owner password protects the permission flags; if you leave it empty the open password is used.
Permissions are enforced by the reader, not by cryptography: most desktop readers honour them, some third-party viewers ignore them.
Encryption happens on your device. If you lose the password, the file cannot be recovered — keep a copy of the original.