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Add Password to PDF Offline | Encrypt PDF Securely in Browser

Add a password to your PDF files online for free. Securely encrypt your sensitive PDF documents directly in your browser with no watermarks.

or drop PDF here to protect

Maximum file size: 50MB

When dealing with financial records, legal contracts, or personal health information, standard file sharing is not enough. You must add a password to your PDF offline to guarantee that only authorized individuals can access the contents.

The Dangers of Cloud Encryption

Uploading a sensitive, unencrypted document to a third-party server just to add a password defeats the purpose of security. Centralized cloud servers are prime targets for cyberattacks, and their data retention policies are often opaque. Our tool completely neutralizes these threats by allowing you to encrypt PDF securely in your browser.

Zero Trust, Absolute Privacy

Operating on a "Zero Trust" architecture, QuickRectify's engine processes the encryption logic entirely client-side. The file never leaves your computer's RAM. You can securely password protect a PDF for free, even while completely disconnected from the internet.

Military-Grade Protection

Once you set your password and the file is generated, the PDF is locked with industry-standard encryption. Without the exact passphrase, the internal data structure remains scrambled, ensuring your privacy is upheld against unauthorized access.

How to use Protect PDF

  1. Select the confidential PDF: Upload the document you want to secure.
  2. Enter a strong password: Type a secure passphrase that will be required to open the PDF.
  3. Encrypt offline: Click 'Protect PDF'. The encryption algorithm runs locally on your device.
  4. Download secured file: Save the newly encrypted PDF document, which is now impenetrable without the password.

Frequently Asked Questions

Is it safe to password protect a PDF using this tool?
It is the safest method available. Because we add the password to your PDF offline, your highly sensitive documents are never uploaded to a cloud server, eliminating the risk of data interception.
What type of encryption is used?
We use strong AES encryption standards enforced by modern web APIs to encrypt the PDF securely in your browser. This ensures maximum compatibility and security.
Can QuickRectify recover my password if I forget it?
No. Because the encryption happens locally and we do not store your data or passwords on our servers, there is no way for us to recover a lost password. Please store it safely in a password manager.

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