Lock PDF
Lock your PDF files online with a strong password. Protect against unauthorized access and editing — fast, secure, and free.
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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.