Chapter 3. PDF: why and when

This chapter covers

  • What is PDF?

  • History of the format

  • Different types

  • Different versions

In chapter 2, you created some simple and some not-so-simple “Hello World” documents. The not-so-simple documents have an initial demonstration of the power of iText as far as document manipulation is concerned. Before we continue with iText at full force, we’ll take one step back and look more closely at the Portable Document Format.

In the first section of this chapter, you’ll learn why PDF was invented and how it evolved into a de facto standard. In the second section, you’ll see that PDF comes in different flavors, some of which are described in an International Standards Organization (ISO) standard. It’s important to understand ...

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