Lock PDF

The ToolBridges Lock PDF tool is a quick and reliable way to secure your PDF documents. By adding a password, you ensure that only authorized people can open or modify your files.

This easy-to-use online service is ideal for protecting contracts, reports, eBooks, and personal documents. No installation is required, and you can lock your files in just a few clicks.

Key Features:

Upload PDFs instantly via drag-and-drop or file selection.

Add a password to restrict viewing and editing.

Protect sensitive files from unauthorized access.

Works in your browser — no software download needed.

Completely free to use.

Whether you’re sharing files online or storing them for later, password protection gives you peace of mind.

How to Use

Upload your PDF – Drag and drop the file or click “Select a File.”

Set your password – Enter a strong, memorable password.

Lock the file – Click “Lock PDF” to apply protection.

Download your locked PDF – Save and share securely.

FAQs

Q1: Is this tool free to use?
Yes, you can lock PDFs without any cost or registration.

Q2: How secure is the locking process?
The tool applies password protection to your file, making it unreadable without the correct password.

Q3: Can I unlock a locked PDF later?
Yes, but you will need the correct password to remove the lock.

Q4: What happens if I lose my password?
For security reasons, the password cannot be recovered, so store it safely.

Q5: Does it work on mobile?
Yes, you can lock PDFs from your phone or tablet through a browser.