Protect PDF
Add password protection to your PDF document.
or drop files here
How to Password Protect a PDF Online
- Upload the PDF file you want to protect with a password.
- Enter and confirm your desired password. Choose a strong password that you will remember.
- Click "Protect PDF" to encrypt the file and download the password-protected PDF.
When to Use This Tool
- Securing sensitive financial documents, tax returns, or legal contracts before sending via email.
- Protecting confidential business proposals, strategy documents, or HR files from unauthorized access.
- Adding a password to personal documents like medical records or identification before cloud storage.
Features
- AES-256 encryption for strong, industry-standard password protection
- Sets both owner and user passwords to restrict opening and editing the document
- Recipients must enter the password to view the PDF in any reader
- Original formatting, images, and interactive elements are fully preserved
- Free and private — no signup required, files auto-deleted after processing
Frequently Asked Questions
What encryption strength is used to protect the PDF?
The tool uses AES-256 encryption, which is an industry-standard encryption algorithm used by governments and financial institutions. This provides a very high level of security for your documents.
What permissions are restricted on the protected PDF?
The password protection requires the correct password to open and view the document. Without the password, the PDF cannot be read, printed, or edited in any standard PDF viewer.
What happens if I forget the password?
There is no password recovery mechanism. If you forget the password, the encrypted PDF cannot be opened. Always store your password in a secure location such as a password manager and keep a copy of the original unprotected file.
Is this PDF protection tool free and secure?
Yes, it is completely free with no account required. Your files are encrypted on our servers and automatically deleted after one hour. We never store or have access to your passwords.