DOCX to EPUB Converter

Convert Microsoft Word (.docx) documents into reflowable, standards-compliant EPUB e-books. Semantic HTML extraction, embedded images, and universal reader compatibility with zero server-side storage.

or drop your Word document here

Semantic Pipeline

Preparing Word Content for Reflowable EPUB

EPUB is the globally recognized open industry standard for digital books. Unlike fixed PDFs that force a rigid print grid, an EPUB dynamically adapts paragraph flow to any smartphone, tablet, computer, or dedicated e-ink display. ScanPDF uses a clean semantic parsing pipeline to convert Word documents into pure, valid EPUB3 packages.

1

Semantic Heading Extraction

Built-in Word heading styles are mapped directly into standard HTML5 heading levels (<h1>, <h2>), establishing a clean logical hierarchy.

2

Embedded Image Extraction

Embedded figures and photos are extracted with original image quality and packaged into the EPUB manifest with correct MIME types.

3

Dual Navigation (NCX & NAV)

Includes both modern EPUB3 nav.xhtml and backward-compatible EPUB2 toc.ncx files for compatibility across every generation of e-readers.

DOCX
Word Document
EPUB
Open E-Book

Standards-Compliant EPUB Container Structure

ZIP

Uncompressed Mimetype

The required mimetype file is stored uncompressed as the first entry in the ZIP container with application/epub+zip.

XML

META-INF/container.xml

Provides the standard rootfile descriptor directing reading systems directly to the package document and reading spine.

HTML

Valid XHTML Content

Document text is rendered as valid XML-compliant XHTML with self-closing tags and clean typographic CSS styling.

MEDIA

Manifested Resources

All images and stylesheets are explicitly registered with correct MIME identifiers in the package manifest table.

Reflowable EPUB vs Fixed-Layout Documents

Understanding the intentional difference between Word/PDF and EPUB is essential for digital reading:

Reflowable EPUB (This Tool)
  • Font face and size can be scaled up or down by the reader
  • Line length adjusts dynamically to phone, tablet, or e-ink screen
  • Pagination is recalculated on the fly by the reading application
  • Compatible with Apple Books, Kobo, Google Play, and Send-to-Kindle
Fixed-Layout (Word to PDF)
  • Locked page dimensions (A4, Letter) that do not reflow
  • Small phone screens require pinch-to-zoom and horizontal panning
  • Exact printer margins, headers, and footers are preserved
  • Ideal for legal contracts, certificates, and print-ready proofs