Password protect PDF

Password Protect PDF

Don't leave sensitive files unprotected. Whether it's a tax return or a confidential contract, Paperly locks your PDF with military-grade encryption before it ever leaves your device.

Paperly PDF editor tools for merging, splitting, and organizing pages

What it is

Password protection encrypts a PDF so that it can only be opened by someone who knows the correct password. Paperly uses strong AES-256 encryption to secure your documents entirely offline.

When you reach for it

  • Emailing a tax return or financial document
  • Sharing confidential business contracts
  • Storing sensitive personal records on cloud drives

How Paperly does it

  1. 01

    Set a password

    Enter a strong password. Paperly will indicate the password strength.

  2. 02

    Encrypt locally

    The document is locked using AES-256 encryption right on your device.

  3. 03

    Share securely

    The resulting PDF cannot be opened by anyone without the password.

Questions people ask

Paperly uses AES-256 bit encryption, the industry standard for securing PDF documents.

No. Because the encryption happens locally and we do not store your files or passwords, a forgotten password cannot be recovered.

Related features

Try password protect pdf where it runs best.

Paperly for iPhone — private, on-device, and free to download.