EPUB: The Open Standard for Digital Books
EPUB (Electronic Publication) is an open eBook format maintained by the W3C. EPUB files are ZIP archives containing XHTML content files, CSS stylesheets, metadata (OPF), and a navigation table of contents (NCX/Nav). The format supports reflowable text, fixed layouts, embedded fonts, and multimedia.
The converter extracts XHTML content from the EPUB archive, preserves chapter structure using the navigation table, and maps EPUB styling to Word formatting. Chapter titles become Word headings, and body text retains paragraph structure.
EPUB Content Extraction
- Chapters: Each EPUB spine item (chapter) becomes a Word section with a heading.
- Table of Contents: The EPUB NCX/Nav document generates a Word TOC structure.
- Footnotes: EPUB footnotes and endnotes are preserved as Word footnotes.
- Embedded Images: Image descriptions (alt text) are included. Actual images are not embedded in the Word output by default.