PDF Password Protector

Add password protection to your PDF files instantly — free, secure, and no sign-up required. Protect your documents with 256-bit AES encryption.

Drop your PDF here

or click to browse

Maximum file size: 500MB

Password Settings

Required to open and view the PDF document
Required to change permissions. If not set, uses the open password.

Permission Restrictions

Restrict what users can do with the protected PDF

Encryption Level

How It Works

1

Upload Your PDF

Drag and drop or click to select the PDF file you want to protect.

2

Set Password & Permissions

Choose your open password, owner password, and permission restrictions.

3

Download Protected PDF

Get your password-protected PDF instantly with military-grade encryption.

Why Use Our PDF Password Protector?

256-bit AES Encryption

Military-grade encryption with support for both 128-bit and 256-bit encryption standards.

Open & Owner Passwords

Set separate passwords for opening the document and controlling permissions.

Permission Controls

Restrict printing, text copying, and editing with granular permission settings.

Auto File Cleanup

Your files are automatically deleted after processing. We never store your documents.

Instant Download

Get your password-protected PDF immediately after processing. No waiting, no queues.

100% Free

No cost, no signup, no hidden fees. Protect unlimited PDFs without restrictions.

Secure Your PDFs Today

100% Free

No cost, no limits

Auto Cleanup

Files deleted after processing

No Sign-up

Use instantly

Secure Encryption

256-bit AES support

Frequently Asked Questions

Yes, this PDF Password Protector is completely free to use with no signup required. You can password protect as many PDFs as you need.
Absolutely! Your files are processed securely on our servers and are automatically deleted after protection. We do not store or share your files or passwords.
We support both 128-bit RC4 and 256-bit AES encryption. 256-bit AES is the industry standard and provides the highest level of security for your PDFs.
The open password (user password) is required to open and view the PDF. The owner password (owner password) controls what actions can be performed on the PDF, such as printing, copying, or editing.
This tool only adds password protection to PDFs. Removing existing passwords is not supported as it may be used to bypass security protections.
Unfortunately, there is no way to recover a lost PDF password. Make sure to keep your passwords in a safe place. We recommend using a password manager.

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