Questions about PDF in general - iText 5 Documentation

When posting a question on StackOverflow, people can tag their posts as iText or iTextSharp questions. This allows me to quickly find those questions by performing a simple query for posts tagged as itext* questions. This includes the tags itext, itextsharp, itextpdf and itextg.

However, not all questions tagged this way are iText-related. Sometimes, people using iText have questions that are about PDF in general.

Can I change the page count by changing internal metadata?

Does a PDF file have styles, headers and footers? - iText 5 Documentation

How do I rotate a PDF page to an arbitrary angle? | iText 5 PDF Development Guide

How should I interpret the coordinates of a rectangle in PDF?

How to allow page extraction when setting password security? | iText 5 PDF Development Guide

How to close a PDF file to recreate it? (File in use problem) | iText 5 PDF Development Guide

How to disable the save button and hide the menu bar in Adobe Reader?

How to encrypt PDF using a certificate? | iText 5 PDF Development Guide

How to extract a page number from a PDF file? | iText 5 PDF Development Guide

How to find out if a PDF file compressed or not?

How to get the page number of an arbitrary PDF object?

How to hide the Adobe floating toolbar when showing a PDF in browser?

How to protect a PDF with a username and password? | iText 5 PDF Development Guide

How to protect an already existing PDF with a password?

What does "Not LTV-enabled" mean?

What is the connection between LTV and document timestamps?

What is the difference between iText, JasperReports and Adobe LC? - iText 5 PDF Library Explained

What is the size limit of pdf file? - iText 5 PDF Library Explained

Where is the origin (x,y) of a PDF page? - iText 5 Documentation

Why are PDF files different even if the content is the same? - iText 5 PDF Library Explained

Why do PDFs change when processing them? - iText 5 PDF Library Explained