How can I add password to PDF for protection from Windows 11?

PDFEncrypt is a completely free PDF encryption tool that allows users to add passwords to PDF files and supports advanced encryption options (restrict printing, copying, editing). It is suitable for users who need to add password to PDF files in bulk, or want to customize encryption permissions. The program is available for Windows and macOS and has no ads or feature limitations!

Step 1: Import PDF File

Click "Add File" or "Add Folder" (you can import multiple PDFs at once).

Step 2: Choose an encryption algorithm

Select encryption level: AES 128-bit (normal security) AES 256-bit (highest security level)

Step 3: Set PDF permissions:

1. Prohibit Printing (when checked, users can not print the PDF).
2. Prohibit copying text (after checking, the text inside the PDF cannot be copied).
3. prohibit editing (after the check box, you can not modify the contents of the PDF).

Step 4: Perform encryption and save the file

1. Select the location of the encrypted file (default stored in the “Documents” folder).
2. Click "Encrypt and Save", the software begins to password protect the PDF file.
3. Wait for the completion of processing, the system will display the “encryption success” prompt.

Step 5: Test the password protected PDF file

1. Find the encrypted PDF file, double-click to open.
2. Enter the password, click "OK" to ensure that the file can be unlocked properly!

If you need to add password to pdf files in batch, PDFEncrypt is the most powerful choice he is completely free, support batch encryption PDF. It can restrict PDF printing, copying, editing privileges, and has strong compatibility.