The PDF Library reads and writes PDFs for all versions of Acrobat (including PDF 2.0), and boasts a dynamic range of features including:

• Transparent Unicode support - create documents in Arabic, Russian or Japanese as easily as English.
• TrueType and Type1 fonts, with sub setting for smaller files. Great for OCR.
• PDF Encryption, for password-protected documents (40 and 128 bit RC4 or AES).
• Embed JPEG, PNG, GIF, TIFF or java.awt.Image images, or add Barcodes directly to the PDF.
• Use Spot colors, calibrated ICC profiles and other advanced color spaces.
• Add HTML-style Hyperlinks to text or images.
• Process 1000+ words a second with kerning, ligatures, justification and ‘curly quotes’ for legibility.
• Simplify complex document creation by defining and applying "Styles".
• Full support for PDF features like bookmarks, compression and document meta-information.
• Non-linear creation of documents - pages can be created and edited in any order.
• Supports PDF/UA standard.

Extended Edition
The Extended Edition of the Java PDF Library offers additional features:

• Load and edit existing PDF documents, as templates or merge with others.
• Create and edit interactive Forms, or "AcroForm".
• Digitally sign documents, or verify existing digital signatures.
• Can read and write Linearized or "web ready" PDFs, designed for faster downloading.

Java PDF Viewer
On top of the Extended edition, the Viewer Extension can be used to display PDFs:

• Swing component for displaying PDF documents.
• Convert PDF to Tiff (or any other bitmap format).
• Extract and index text and images from PDF documents, including integration with Apache Lucene.
• Print PDF documents, including support for annotations and other PDF features not supported by Java 5 printing.
• Create PDF/A documents: Pre-flight new or existing PDFs against various PDF/A and PDF/X profiles.