Back to Home

PDF Lock

Password protect any PDF — works completely in your browser, no upload required.

Drop your PDF here or click to browse

Supports any PDF file

Common Use Cases for PDF Lock

  • Confidential Documents: Password-protect sensitive PDFs containing financial information, personal data, or trade secrets.
  • Client Deliverables: Encrypt PDFs before sending to clients to ensure only authorized recipients can access content.
  • Secure Sharing: Add password protection when sharing documents via email, cloud storage, or file transfer services.
  • Compliance Requirements: Meet security regulations by encrypting PDFs containing regulated data like HIPAA or GDPR protected information.
  • Version Control: Prevent unauthorized editing or modification by setting document permissions and encryption.
  • Legal Protection: Secure legal documents, contracts, and agreements to prevent tampering and unauthorized distribution.

How It Works

1. Upload PDF

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

2. Set Password

Enter and confirm a password. Optionally set an owner password and fine-tune permissions.

3. Lock & Download

Click lock to encrypt and download the protected PDF instantly — all in your browser.

Frequently Asked Questions