PDF Security

Add password protection to your PDF documents with AES-256 encryption, or remove an existing password you already know. Separate user and owner passwords let you control who can open the file versus who can print, copy, or edit it. Everything happens on your device — your files never leave your browser.

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Features

Industry-standard AES-256 encryption for serious document protection

Separate user password (to open) and owner password (to restrict actions)

Restrict printing, copying, editing, and adding comments independently

Remove an existing password from a protected PDF when you know the current one

Real-time password strength indicator while you create a new password

Live preview shows your PDF locked or unlocked before you download it

Everything happens on your device — files never reach a server

Fully compatible with iOS, Android, and web browsers, free to use

How it works

How It Works

Choose Your PDF

Select the PDF you want to protect or unlock, or drag & drop it into the interface. Your file stays on your device and is never uploaded anywhere.

Set Password and Restrictions

Choose to add a new password or remove an existing one. When protecting, set a strong password and decide which restrictions (printing, copying, editing) to apply.

Encrypt or Unlock and Download

Your PDF is encrypted with AES-256 or its existing password is removed. Download your secured or unlocked file the moment it's ready.

Use Cases

Who Is It For?

Lawyers and accountants sharing confidential client documents by email

HR departments protecting salary statements and personal employee records

Businesses securing contracts and proposals before sending them to third parties

Anyone receiving a password-protected PDF who needs to remove the lock to edit or archive it

Students and researchers protecting theses or unpublished work before submission

FAQ

Frequently Asked Questions

How secure is AES-256 encryption?

AES-256 is one of the strongest encryption standards in use today, trusted by governments and financial institutions worldwide. Breaking it through brute force is practically impossible with current technology.

Can I change the password of an already protected PDF?

Yes. First remove the current password using the unlock mode, then protect the file again with a new password. You need to know the existing password to do this.

What's the difference between the user password and the owner password?

The user password is required to open and view the document at all. The owner password controls permissions like printing, copying, and editing once the document is open. They can be the same or different depending on your needs.

What happens if I forget the password I set?

Pofide cannot recover or bypass a forgotten password — encryption is performed entirely in your browser and we never store your files or passwords. Keep your password somewhere safe before encrypting an important document.

Your Privacy is Protected

All PDF operations happen on your device. Your documents are never uploaded to our servers.

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