PDF Locker is a reliable online tool designed to enhance the security of your PDF documents. With this tool, you can easily lock and protect your sensitive PDF files by setting a secure password. Please make sure to set a strong password. A strong password is one that is a combination of alphabets (upper and lower cases), numbers and special characters, that must not be less than 8 characters in total and should not contain common names or phrases. Please ensure to store your passwords safely (in a password manager), as you may lose access to your PDF permanently if you forget it.
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