✦ AES-256 Encryption

Secure Protect PDF with Password · Free

Add AES-256 password protection to any PDF document instantly.

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Click to select file or drag & drop here

Accepted: .pdf · Max 200 MB

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✅ Your file is ready!

About this tool

What is Protect PDF with Password?

PDF password protection encrypts your document so only people with the correct password can open it. This is essential for confidential contracts, financial documents, medical records, and any sensitive information shared digitally.

Step by Step

How to use Protect PDF with Password

Upload your PDF

Select the PDF you want to protect with a password.

Enter a password

Choose a strong password. We recommend 12+ characters with numbers and symbols.

Click Process File

Your PDF is encrypted with AES-256 encryption on our server.

Download protected PDF

Share your password-protected PDF securely.

Features

Why use EditPDFDoc?

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AES-256 encryption

Bank-level encryption protects your document

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Custom password

Set any password you choose

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Preserved content

All content, images, and formatting intact

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Secure process

Encryption happens on our secure server

FAQ

Frequently Asked Questions

What encryption standard is used?

We use AES-256 encryption — the same standard used by banks and governments worldwide.

Can I set different open and owner passwords?

Yes. The open password is required to view the PDF. The owner password controls editing and printing permissions.

What if I forget the password?

There is no way to recover a lost password from an AES-256 encrypted PDF. Always keep a secure record of your password.

Can I protect a PDF that's already encrypted?

You need to unlock it first using our Unlock PDF tool, then re-protect it with your new password.

Is it safe to upload confidential documents?

Yes. All uploads are SSL encrypted and files are automatically deleted from our servers after 2 hours.

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No sign-up required. Works on any device. Files deleted automatically after 2 hours.

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