🔒 Password Protect PDF

Add AES-256 password protection to your PDF files. Set user and owner passwords. Free, private, all in your browser.

About Password Protect PDF

Add AES-256 encryption to your PDF files. Set a user password to control who can open the document, and an owner password to restrict printing, copying, and editing. All encryption happens in your browser.

AES-256 Encryption

Industry-standard encryption keeps your sensitive documents secure from unauthorized access.

Permission Control

Restrict printing, modification, copying, and annotation with granular permission settings.

PDF 2.0 Compatible

Protected PDFs work with all modern PDF readers including Adobe Acrobat, Preview, and browsers.

Browser-based Security

Your PDF and password never leave your device. Encryption runs entirely in your browser using pdf-lib.