docx4j - JAXB-based Java library for Word docx, Powerpoint pptx, and Excel xlsx files

docx4j is a library which helps you to work with the Office OpenXML file format as used in docx documents, pptx presentations, and xlsx spreadsheets.

It supports:

• Open existing docx/pptx/xlsx
• Create new docx/pptx/xlsx
• Programmatically manipulate docx/pptx/xlsx (anything the file format allows)
• CustomXML binding (with support for pictures, rich text, checkboxes, and OpenDoPE extensions for repeats & conditionals, and importing XHTML)
• Export as HTML
• Export as PDF (using Plutext's PDF Converter, or use docx4j-export-FO project)
• Produce/consume Word 2007's xmlPackage (pkg) format
• Apply transforms, including common filters
• Font support (font substitution, and use of any fonts embedded in the document)