If you want to extract highlighted text from PDF file as a plain text file, then this post covers some good free PDF Highlight Extractor software to do that.

Removing text from a PDF isn't as easy as drawing a black bar across it. Fortunately, redaction tools let you truly erase sensitive text in Preview, Adobe Acrobat DC Pro, and PDFPen.

Before attempting to remove PDF text, you first must determine if the file is locked. Also, consider the permissions and copyright regardless of the file status.

In this article, we will show you how to remove blank pages from PDF files on a Windows PC. PDF documents occasionally include blank pages (pages without text, graphics, or other visible content ...

Using PDF password remover tools There are various third party tools that can remove a password from a PDF file, even if you don't know it.