How can I Lock PDF with Password?

To lock a PDF with a password, the easiest and most reliable way is by using SysTools PDF Locker. It helps you secure sensitive PDF documents by adding strong password protection in just a few clicks.

Steps to Lock PDF with SysTools PDF Password Protector

1. Download and launch SysTools PDF Document Locker on your system.

2. Click Add Files / Add Folder to upload the PDF(s).

3. Click Change to set the location for resultant > Next.  

4. Choose the user password or owner password as per your requirement.

5. Set permissions like printing, editing, or copying (optional).

6. Click Lock to apply password protection instantly.

Key Features

• Secure PDF with strong password encryption

• Lock single or multiple PDFs at once

• Maintain original PDF formatting

• Supports all PDF versions

• Simple and user-friendly interface

• Compatible with a Windows or macOS machine

Using SysTools PDF Password Protector ensures your confidential PDFs stay protected from unauthorized access.