PDF redaction is handy for removing or hiding sensitive information from different areas of a PDF document. The selected areas are covered with redaction marks or colored boxes so that the information ...

As much as we fail to give Apple's free Preview app enough respect, it is true that there are PDF editing jobs it can't do. Yet there are many third-party apps that will let you do the most remarkable ...

In the digital era, educational material is actively disseminated on the Internet, and it can be research articles or ...

Concealing classified information in digital government documents is not as easy as striking out text with a black marker. Today’s digital documents make the task more complex, but the National ...