How do DOCX and EPUBcompare? Here's everything you need to know to choose the right format — and how to convert between them.
Office Open XML Document
DOCX is the default format for Microsoft Word documents. It's an XML-based format that replaced the older .doc format, offering better compression, easier recovery, and broader compatibility.
Electronic Publication
EPUB is the open standard for digital books and publications. It supports reflowable content that adapts to any screen size, making it the preferred format for e-readers and reading apps.
| Specification | DOCX | EPUB |
|---|---|---|
| Full name | Office Open XML Document | Electronic Publication |
| Extension | .docx | .epub |
| MIME type | application/vnd.openxmlformats-officedocument.wordprocessingml.document | application/epub+zip |
| Category | Document | Document |
| Developer | Microsoft | International Digital Publishing Forum (IDPF) |
| Year introduced | 2007 | 2007 |
DOCX and EPUB serve different purposes. DOCX is ideal for business reports and memos, while EPUB excels at e-books and digital publications.
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