Content parsing, extraction and redaction of text

iText can parse PDFs to extract the content of a page. As there are many different ways to create a PDF file, and as the text on a page usually isn't more than a bunch of characters drawn on a page, it's not trivial to extract text correctly.

How to extract text and anchor information from a PDF?

How to read text from a specific position?

Why is the text I extract from an English PDF page garbled?

Why can't I extract text added using a Type3 font correctly from a PDF?

How to use a text extraction strategy after applying a location extraction strategy?

How to remove text from a PDF?

How to create and apply redactions?

How to get the co-ordinates of an image?

What are the extra characters in the font name of my PDF?