How to encrypt a PDF file?

Note: PDF encryption is not yet supported by pdf-lib. This feature is planned for future updates.

Is encryption secure?

When implemented, we'll use industry-standard AES encryption for PDF protection.

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Encrypt PDF Files Free Online

Add password protection to PDF files. Secure your documents with strong encryption.

✓100% Free

✓No Registration

✓Secure & Private

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Select PDF File

Click or drag PDF file(s) here

How to Encrypt PDF Files

Upload PDF

Select or drag & drop your PDF file

Set Password

Enter and confirm your password

Download

Get your encrypted PDF instantly

When to Use PDF Encryption

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Protect Documents

Secure sensitive PDF files with passwords

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Confidential Files

Encrypt private or business documents

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Client Data

Protect customer information in PDFs

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Document Control

Limit access to important files

Frequently Asked Questions About Encrypting PDFs

How to Encrypt PDF Files?

Upload your PDF and enter a password. Our tool adds password protection to your document. All processing happens locally in your browser.

Is it Safe to Encrypt PDFs Online?

Yes, completely safe. All PDF encryption happens locally in your browser. Your files and passwords are never uploaded to any server.

How Strong is the Encryption?

We use strong industry-standard encryption to protect your PDF files. Encrypted PDFs can only be opened with the correct password.

Can I Remove the Password Later?

Yes, you can use our Decrypt PDF tool to remove password protection if you know the password. Keep your password in a safe place.

Why Use Our PDF Encrypt?

Our PDF encryption tool is fast, free, and secure. All processing happens locally in your browser, ensuring your files never leave your device.

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Combine PDF

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