Restricting access to your confidential and private PDF files is easy with PDF Lock. This tool offers users high levels of security to their PDF files by allowing them to encrypt it with a strong password and also disabling some of the common functionalities such as printing and editing the content so that the data remains safe at all times.
การรักษาความปลอดภัยขั้นสูงเพื่อป้องกันการเข้าถึงไฟล์ พีดีเอฟ
