To protect your files with a password, please follow these instructions (PDF Expert for Mac OS encrypts documents using the 128-bit AES encryption algorithm):
- Launch PDF Expert for Mac > open the necessary file.
- Click > File > Set Password.
- Type your password and verify it > Set.
To change or remove your password, you need to follow these instructions:
- Open the same file again > File.
- Change Password.
- Type in a New Password or click Remove Password.