Most documents available online, especially researches are available on PDF format because it is compatible across platforms and browsers (basically compatible with all OS and viewable across different browsers), small-size, not prone to virus, and several other advantages over the traditional Word documents. However, there are certain cases where ...

Have you downloaded a file, a compressed file in particular like in zip and rar, that require you a password to extract the files in it?  The folder is encrypted then, and you do not know the password to open it. Good thing there are software that do the job of ...