Lock or Unlock a PDF

Drop a PDF and the tool sees whether it is already protected. An unprotected file gets a password; a protected one can be saved without it once you enter the right password.

• Add password: Anyone who opens the file must enter the password. The file is encrypted with AES-256.
• Permissions: Choose whether printing, copying text and images, and editing are allowed for people with the password.
• Remove password: Enter the current password and download an unprotected copy, handy for files you open every day.
• Restrictions only: Some PDFs open without a password but block printing or copying. Leave the password field empty to save a copy without those restrictions.

Why use this tool?

Your Password Never Leaves the Browser

Encryption and decryption run in JavaScript on your device. Neither the PDF nor the password is uploaded, stored or logged, which matters most for exactly the documents you want to protect.

Strong, Standard Encryption

Protected files use AES-256, the strongest encryption in the PDF standard. They open in Adobe Acrobat Reader, the PDF viewers of Chrome, Edge, Firefox and Safari, and other current PDF apps.

Frequently Asked Questions