The reason the PDF can be so rich in terms of features is because of the way it was built by Adobe. PDF files are able to include all sorts of rich text as well different graphics - both vector and raster images. PDF to CSV - Convert file now View other document file formats
PDF files often include graphics of some form and tend to be used in professional settings. It was created as a way of allowing people to present documents in a cleaner, crisper way and in a way that allowed them to open that document on any operating system.
A PDF also goes by the full name of a Portable Document Format and was created by Adobe Systems at the start of the 90s.