A-PDF Password Security v1.4.1

Программа используется для установки/удаления защиты на PDF-файлы.

A-PDF Password Security is a desktop utility program that lets you change password security of existing Acrobat PDF files. That means you can protect PDF files with 128 bit encryption, or remove existing password protection. It can handle either single or batch documents. Another convenient features include password pool and hot directory.

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http://www.a-pdf.com