Convert SXW to EPUB3
Max file size 100mb.
SXW vs EPUB3 Format Comparison
| Aspect | SXW (Source Format) | EPUB3 (Target Format) |
|---|---|---|
| Format Overview |
SXW
StarOffice/OpenOffice.org Writer Document
SXW is a legacy word processing document format used by StarOffice and early versions of OpenOffice.org Writer. It is a ZIP archive containing XML files (content.xml, styles.xml, meta.xml) that define the document structure, formatting, and metadata. SXW was the predecessor to the modern ODT format and can still be opened by LibreOffice and OpenOffice. Legacy Format ZIP/XML-Based |
EPUB3
Electronic Publication 3.0
EPUB3 is the latest version of the EPUB ebook standard, maintained by the W3C. Built on HTML5, CSS3, and JavaScript, it supports multimedia content, interactive elements, advanced typography, MathML equations, and comprehensive accessibility features. EPUB3 is backward-compatible with EPUB 2 readers for basic content. Modern Ebook HTML5-Based |
| Technical Specifications |
Structure: ZIP archive containing XML files (content.xml, styles.xml, meta.xml)
Developed By: Sun Microsystems (StarOffice/OpenOffice.org) MIME Type: application/vnd.sun.xml.writer Extension: .sxw Based On: OpenOffice.org XML format (pre-ODF) |
Structure: ZIP archive with HTML5, CSS3, JS, and OPF manifest
Standard: EPUB 3.3 (W3C Recommendation, 2023) MIME Type: application/epub+zip Content: HTML5 (XHTML serialization) with CSS3 Extension: .epub |
| Syntax Examples |
SXW documents contain XML content within a ZIP archive: <?xml version="1.0" encoding="UTF-8"?>
<office:document-content>
<office:body>
<office:text>
<text:h text:style-name="Heading_1">
Chapter One
</text:h>
<text:p>The adventure begins.</text:p>
</office:text>
</office:body>
</office:document-content>
|
EPUB3 uses HTML5 content within a ZIP archive: <!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:epub="http://www.idpf.org/2007/ops">
<head>
<title>Chapter One</title>
<link rel="stylesheet" href="style.css"/>
</head>
<body>
<section epub:type="chapter">
<h1>Chapter One</h1>
<p>The adventure begins.</p>
</section>
</body>
</html>
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| Version History |
Introduced: 2002 with StarOffice 6.0 / OpenOffice.org 1.0
Developer: Sun Microsystems Superseded By: ODT (ODF 1.0, 2005) Status: Legacy format, read-only support in modern software |
EPUB 3.0: 2011 (IDPF, HTML5-based)
EPUB 3.1: 2017 (simplified, removed NCX requirement) EPUB 3.3: 2023 (W3C Recommendation) Status: Active W3C standard |
| Software Support |
Office Suites: LibreOffice, Apache OpenOffice
Converters: Pandoc (reads as ODT), unoconv Legacy: StarOffice 6.0+, OpenOffice.org 1.x-2.x Platforms: Windows, macOS, Linux |
Readers: Apple Books, Kobo, Thorium, Readium
Editors: Sigil, Calibre, Adobe InDesign Validators: EPUBCheck (W3C validation tool) Platforms: iOS, Android, Windows, macOS, Linux |
Why Convert SXW to EPUB3?
Converting SXW to EPUB3 transforms legacy StarOffice/OpenOffice.org Writer documents into the most modern and feature-rich ebook format available. EPUB3, built on HTML5 and CSS3, provides capabilities far beyond what EPUB 2 offers, including multimedia support, interactivity, advanced typography, and comprehensive accessibility features.
EPUB3's HTML5 foundation means your converted documents benefit from modern web technologies. CSS3 provides advanced typography features like web fonts, text shadows, columns, and flexbox layouts. For documents containing mathematical content, EPUB3 supports native MathML rendering, preserving equation formatting perfectly.
Accessibility is a key advantage of EPUB3 over both SXW and EPUB 2. EPUB3 includes ARIA roles, semantic HTML5 elements, and navigation landmarks that make the content accessible to screen readers and assistive technologies. This is increasingly important as accessibility regulations require organizations to publish content in accessible formats.
The conversion process extracts content from the SXW archive, generates HTML5 documents with proper semantic structure, creates EPUB3 navigation documents, and packages everything into a standards-compliant EPUB3 file. The output validates with EPUBCheck and is compatible with modern reading systems.
Key Benefits of Converting SXW to EPUB3:
- Modern Standard: Built on HTML5/CSS3 web technologies
- Accessibility: WCAG-compliant with ARIA roles and semantic structure
- Rich Typography: CSS3 fonts, advanced layout, and text rendering
- Multimedia: Support for embedded audio, video, and interactivity
- Wide Compatibility: Works on Apple Books, Kobo, and modern reading apps
- Future-Proof: W3C standard with active development and growing adoption
Practical Examples
Example 1: Educational Textbook
Input SXW file (textbook.sxw):
A legacy StarOffice Writer textbook with chapters, diagrams, exercises, and reference tables.
Output EPUB3 file (textbook.epub):
A modern, accessible ebook with semantic HTML5 structure, navigable chapters with epub:type attributes, properly formatted tables, and ARIA roles for screen reader compatibility. The EPUB3 format enables enhanced rendering of mathematical content and proper semantic structure for educational materials.
Example 2: Technical Reference
Input SXW file (reference.sxw):
An OpenOffice.org Writer technical reference document with API descriptions, code examples, and parameter tables.
Output EPUB3 file (reference.epub):
A structured EPUB3 document with proper code block formatting using HTML5 pre and code elements, styled with CSS3 for syntax readability. The navigation document provides quick access to all API sections, and semantic markup ensures proper indexing and searchability.
Example 3: Corporate Training Guide
Input SXW file (training.sxw):
A company training guide from StarOffice with modules, quizzes, and procedural instructions.
Output EPUB3 file (training.epub):
An accessible training ebook with module-based navigation, properly structured procedural steps using ordered lists, and EPUB3 semantic elements for different content types. The accessible format ensures compliance with corporate accessibility requirements.
Frequently Asked Questions (FAQ)
Q: What is the difference between EPUB and EPUB3?
A: EPUB 2 uses XHTML 1.1 and CSS 2.1, while EPUB3 is built on HTML5, CSS3, and supports JavaScript. EPUB3 adds multimedia support, MathML equations, SVG graphics, accessibility features (ARIA), and semantic inflection. EPUB3 is the current W3C standard and is recommended for new publications.
Q: Can all e-readers display EPUB3 files?
A: Most modern e-readers and reading apps support EPUB3, including Apple Books, Kobo, Google Play Books, and Thorium Reader. Basic content displays correctly even on readers with limited EPUB3 support, as EPUB3 is backward-compatible with EPUB 2 for text and image content.
Q: Does EPUB3 support accessibility features?
A: Yes, accessibility is a core feature of EPUB3. It includes ARIA roles and attributes, semantic epub:type annotations, alternative text for images, navigation landmarks, and page list navigation. EPUB3 is designed to meet WCAG 2.0 accessibility guidelines.
Q: Will my SXW tables be preserved in EPUB3?
A: Yes, tables from the SXW document are converted to HTML5 table elements with proper thead, tbody, and accessibility attributes. CSS3 styling ensures the tables display clearly on different screen sizes, though very wide tables may need horizontal scrolling on smaller devices.
Q: Can I add multimedia to the EPUB3 after conversion?
A: Yes, one advantage of EPUB3 is its multimedia support. After conversion, you can use an EPUB editor like Sigil to add audio narration, video content, or JavaScript interactivity to the ebook. The SXW source is text-only, but the EPUB3 container supports rich media additions.
Q: Is EPUB3 better than PDF for ebooks?
A: For most ebook use cases, yes. EPUB3 provides reflowable content that adapts to screen sizes, adjustable fonts, accessibility features, and navigation. PDF is better for print-faithful layouts but provides a poor reading experience on small screens. EPUB3 is the recommended format for digital reading.
Q: How can I validate the EPUB3 output?
A: You can validate the EPUB3 file using EPUBCheck, the official W3C validation tool. EPUBCheck verifies that the file structure, metadata, content documents, and navigation all conform to the EPUB3 specification. Our converter produces output that passes EPUBCheck validation.
Q: Does the converter generate EPUB3 navigation documents?
A: Yes, the converter generates a proper EPUB3 navigation document (nav.xhtml) based on the heading hierarchy in your SXW document. This replaces the NCX file used in EPUB 2 and provides a structured table of contents for navigation within the ebook.