Dynamic PDF files are on the rise. XFA technology underpins a change in the way businesses as well as governmental offices are currently managing data. XFA’s dynamic features allow your PDF forms to grow and reformat themselves depending on the data entered. In a tax form, for instance, your PDF file can generate new fields based on user responses.
As iText’s only closed-source project, XFA Worker lets you program dynamic PDFs as well as convert them into static, protected PDF files for security reasons. XFA Worker is an add-on to the full iText suite.