Project Release Information
Apart from many bugfixes, such as fixing a multithreading problem introduced in iText 5.3.5, this release focuses on the creation of structured PDFs. It's now possible to create PDFs that are automatically tagged when using iText's high-level objects such as Document, Paragraph, PdfPTable, etc. Tagged PDF is a first step towards better support for PDF/UA and PDF/A (level A) compliance.
A large part of this release involves PDF parsing. It adds support for special encodings and foreign languages. It fixes parsing errors and makes iText more tolerant when reading invalid PDF syntax. Furthermore, iText is now able to generate PDFs larger than 2 GB. This release fills some gaps regarding the implementation of PAdES, and reduced the dependency on java.awt to ease the use of iText on Google Android and GAE.
This release brings the long-awaited support for PAdES-LTV (this will be part of the upcoming PDF-2 standard), improves the code for parsing PDFs for images, fixes most of the bugs which were reported since the previous release, and makes iText more tolerant towards PDFs which weren't created correctly.
Functionality was added that allows you to completely remove an optional content layer (OCG). This is mainly a maintenance release that fixes all bugs reported on the mailing list since June 6.
Some functionality that was needed in XML Worker 1.0.0 was introduced. For instance, high level interfaces (Indentable, Spaceable) and a WritableDirectElement class were introduced. The logging that was introduced in 5.1.0 was changed so that it works the same way other logging frameworks do. A simple System.out logger, SysoLogger, is now provided. Some bugs were fixed to solve PDF reading and parsing problems, to solve problems with list symbols, and to avoid ClassCastExceptions when reading/manipulating existing OCG layers.