Lock PDF

Password-protect and restrict permissions on your PDF documents.

Drag & Drop PDF File Here

or

No file selected.
Security Options

Setting a Permissions Password enables the options below.

User Permissions (If Permissions Password is set):

Fortify Your Documents: A Guide to Locking PDFs

Protect sensitive information and control access to your PDF files with passwords and permissions.

Why Lock Your PDFs?

PDFs are a universal format for documents, but their ease of sharing can sometimes be a security risk. Locking your PDFs provides crucial control:

  • Confidentiality: Prevent unauthorized viewing of sensitive information with an "Open Password". Only those with the password can access the document.
  • Content Integrity: Restrict actions like copying text, images, or graphics, ensuring your intellectual property remains secure.
  • Controlled Modification: Prevent unwanted changes to your document's content, forms, or annotations by setting a "Permissions Password".
  • Print Control: Decide whether recipients can print your document, useful for drafts or confidential reports.
  • Compliance: Meet regulatory requirements for data protection (e.g., GDPR, HIPAA) by securing documents containing personal or confidential data.

How to Secure Your PDF: A Simple Guide

Our online PDF locker is designed for ease of use and maximum privacy, processing your files securely in your browser.

  1. Upload Your PDF File
    Click "Select PDF File" or drag and drop your PDF into the designated area.
  2. Set Passwords (Optional)

    Open Password: Set this if you want to require a password to simply open and view the PDF.

    Permissions Password: Set this if you want to control user actions like printing, copying, or modifying the document. If you set this, select the allowed permissions below.

  3. Choose Permissions (if applicable)
    If you've set a Permissions Password, check the boxes for the actions you want to allow (e.g., printing, modifying, copying content, annotating, filling forms, assembling).
  4. Click "Lock PDF"
    The tool will encrypt your PDF instantly in your browser based on your settings.
  5. Download Your Secured PDF
    Once processing is complete, click the "Download Locked PDF" button to save your protected document.

Frequently Asked Questions (FAQ)

Yes, it's completely free. You can use our PDF locker to password-protect and set permissions on your documents without any charges, subscriptions, or limits.

Absolutely. Your security is our priority. This tool performs all encryption and processing directly in your web browser. Your PDF file is never uploaded to our servers, ensuring your data remains private and secure on your own device.

An Open Password is required to open and view the PDF document at all. A Permissions Password (also known as a master or owner password) allows you to restrict specific actions (like printing, copying, editing) even if the document is open. If both are set, the Permissions Password typically has higher authority to override user actions.

It's crucial to remember your passwords. For security reasons, if you forget the Open Password, you will not be able to access your document. If you forget the Permissions Password, you might not be able to change the document's security settings later. We do not store or have access to your passwords.