PDF Lock/Unlock Tool
Secure your PDF documents or remove existing password protection
About This Tool
Our PDF Lock/Unlock Tool allows you to add password protection to your PDF files or remove existing passwords (with proper authorization). Whether you need to secure sensitive information or regain access to a protected document, this tool provides a simple solution.
The tool offers both basic password protection and advanced permission settings to give you complete control over your PDF security.
Upload Your PDF File
Drag & drop your PDF file here or click to browse
Add Password Protection
Full access password (required)
Required to open document (leave blank for no open password)
Remove Password Protection
Enter the owner password or user password
How to Use
To Lock a PDF:
1
Upload your PDF file by clicking "Select File" or dragging it into the upload area
2
Enter an owner password (required) and user password (optional)
3
Adjust permission settings to control what users can do with the document
4
Click "Lock PDF" and download your secured document
To Unlock a PDF:
1
Upload your password-protected PDF file
2
Enter the current owner or user password
3
Click "Unlock PDF" and download the unlocked document
PDF Security Information
Understanding PDF Password Types
Owner Password: Provides full access to the PDF, including the ability to change security settings and permissions.
User Password: Required to open the document. Without it, the PDF cannot be viewed at all.
Security Best Practices
- Use strong, unique passwords for important documents
- Keep track of your passwords in a secure password manager
- Consider using different user and owner passwords for maximum security
- Remember that PDF security is primarily a deterrent and may not stop determined attackers
