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Secure your PDF documents with password protection and permission restrictions.
Click to browse or drag and drop files here
Maximum file size: 100MB per file
Select the PDF file you want to protect. Files up to 50MB are supported.
Choose a user password (required to open) and/or an owner password (required to modify permissions).
Select which actions should be allowed: printing, copying text, modifying content, filling forms.
Click "Protect PDF" to apply security settings and download your protected file.
Set separate user passwords (for opening) and owner passwords (for editing permissions).
Control printing, copying, content modification, form filling, and annotations.
All protection is applied in your browser - your files never leave your device.
Protect PDF files of any size without restrictions.
Protect sensitive business documents with passwords and prevent unauthorized copying.
Allow viewing but prevent any modifications, copying, or content extraction.
Protect PDF forms while still allowing users to fill them out.
Choose passwords with at least 8 characters including numbers and special characters.
User passwords control opening the PDF. Owner passwords control editing permissions.
You can allow specific actions like form filling while blocking others like content copying.
Always test your protected PDFs in different viewers to ensure protection works as expected.
AES-256 encryption, the same standard used by banks and government agencies for securing sensitive data.
Yes, you can set an owner password that controls permissions separately from the user password required to open the file. This allows granular control over what recipients can do.
AES-256 encrypted PDFs with strong passwords are computationally infeasible to brute-force. Weak passwords (under 8 characters) are vulnerable to dictionary attacks.
Yes, PDF encryption is part of the ISO 32000 standard and is supported by all compliant viewers including Adobe Acrobat, Preview, Chrome, and Firefox.
Our PDF password protection tool uses industry-standard encryption to secure your documents. Set user passwords, owner passwords, and granular permissions for complete control.
This tool is particularly useful when: