Password protect a PDF with AES-256 encryption. Upload your PDF, create a password, and download the protected document securely for free.
Protect a PDF with a password before storing, sending, or sharing sensitive documents. This online PDF protection tool encrypts your document with AES-256 encryption and creates a new password-protected PDF for download.
Add an opening password to a PDF so the protected document requires the password when it is opened.
The generated PDF uses AES-256 encryption for strong password-based document protection.
Your document remains a PDF. The tool creates an encrypted output copy instead of changing the original file on your device.
Uploaded and generated processing files use temporary server storage and are removed after processing finishes.
Add password protection to your PDF in four simple steps.
Choose a PDF from your device, drag and drop it into the upload area, or import it from Google Drive or Dropbox.
Enter the password that should be required when someone opens the protected PDF.
Enter the same password again to prevent accidental password entry mistakes.
Click Protect PDF. The encrypted PDF is generated and downloaded to your device.
PDF encryption can add an access-control layer before documents are shared or stored.
Protect and encrypt PDF documents with a password directly from your browser.
Password protection encrypts the PDF so a PDF reader must use the correct password to open the document. This can be useful when a document contains information that should not be openly accessible to everyone who receives the file.
The Protect PDF tool creates a separate encrypted copy using AES-256 encryption. Your original PDF stored on your computer, phone, or cloud account is not modified.
A password that protects PDF opening is different from permission settings intended to restrict actions such as printing, copying, or editing. This tool is designed to encrypt the PDF and require a password to open the protected file.
If your goal is to control specific PDF permissions rather than require an opening password, you need a PDF permissions tool that supports those individual restrictions.
Upload your PDF, enter a password, confirm it, and select Protect PDF. The tool creates an AES-256 encrypted PDF that requires the password when opened.
Yes. This Protect PDF tool can add password protection to a PDF without requiring an account.
Select the PDF you want to protect, create an opening password, confirm the password, and process the document. A new encrypted PDF is then downloaded.
The generated protected PDF uses AES-256 encryption.
No. The original PDF stored on your device is not modified. The tool creates a separate password-protected PDF.
No. The current Protect PDF processor rejects PDFs that are already encrypted or password protected.
This tool is designed to require a password to open the encrypted PDF. It does not provide configurable copying, printing, or editing permission controls.
You can upload one PDF file up to 100 MB.
No. The processor uses private temporary files while creating the protected PDF and removes temporary processing files after the request finishes.
Keep your password somewhere safe. You will need the correct password to open the protected document.