Convert EPUB3 to SXW

Why Convert EPUB3 to SXW?

Converting EPUB3 e-books to SXW format is useful when you need to open e-book content in legacy StarOffice or early OpenOffice.org installations. While SXW has been superseded by the ODT format, some organizations and archive systems still require documents in the original StarOffice Writer format for compatibility reasons.

The SXW format provides full word processor capabilities, allowing you to edit the converted e-book content with paragraph styles, headers, footers, page numbers, and other traditional document formatting features. This makes it suitable for scenarios where the flowing e-book text needs to be converted into a paginated, print-ready document.

This conversion is particularly relevant for government agencies, educational institutions, and enterprises that maintain legacy StarOffice or OpenOffice.org environments. The SXW output preserves the chapter structure, text formatting, and basic table layouts from the original EPUB3 source.

Since both EPUB3 and SXW are ZIP-compressed XML-based formats, the conversion maps EPUB3's XHTML content to SXW's XML document structure, translating HTML formatting to StarOffice styles. CSS properties are converted to corresponding SXW style attributes where possible.

Key Benefits of Converting EPUB3 to SXW:

• Legacy Compatibility: Open e-book content in StarOffice and early OpenOffice.org versions
• Editable Document: Full word processing capabilities for editing and reformatting
• Print Layout: Page-oriented format with headers, footers, and page numbers
• Style Support: Paragraph and character styles for consistent formatting
• Archive Compliance: Meet legacy format requirements for document archives
• XML-Based: Inspectable and processable document structure
• Office Integration: Works with LibreOffice for further format conversion

Practical Examples

Example 1: Chapter with Headings

Input EPUB3 file (book.epub) — chapter content:

<section epub:type="chapter">
  <h1>Getting Started</h1>
  <p>Welcome to this comprehensive guide
  on modern web development.</p>
  <h2>Prerequisites</h2>
  <p>Before you begin, make sure you have
  a text editor and a web browser.</p>
</section>

Output SXW file (book.sxw) — content.xml:

<office:body>
  <text:h text:style-name="Heading 1"
    text:level="1">Getting Started</text:h>
  <text:p text:style-name="Text Body">
    Welcome to this comprehensive guide
    on modern web development.</text:p>
  <text:h text:style-name="Heading 2"
    text:level="2">Prerequisites</text:h>
  <text:p text:style-name="Text Body">
    Before you begin, make sure you have
    a text editor and a web browser.</text:p>
</office:body>

Example 2: Formatted Text with Lists

Input EPUB3 file (manual.epub) — formatted content:

<section>
  <h2>Installation Steps</h2>
  <p>Follow these <strong>important</strong> steps:</p>
  <ol>
    <li>Download the installer</li>
    <li>Run the setup wizard</li>
    <li>Restart your computer</li>
  </ol>
</section>

Output SXW file (manual.sxw) — content.xml:

<office:body>
  <text:h text:style-name="Heading 2"
    text:level="2">Installation Steps</text:h>
  <text:p>Follow these
    <text:span text:style-name="Bold">important</text:span>
    steps:</text:p>
  <text:ordered-list>
    <text:list-item><text:p>Download the installer</text:p></text:list-item>
    <text:list-item><text:p>Run the setup wizard</text:p></text:list-item>
    <text:list-item><text:p>Restart your computer</text:p></text:list-item>
  </text:ordered-list>
</office:body>

Example 3: Table Content Conversion

Input EPUB3 file (report.epub) — table data:

<table>
  <tr>
    <th>Feature</th><th>Status</th>
  </tr>
  <tr>
    <td>Text formatting</td><td>Supported</td>
  </tr>
  <tr>
    <td>Images</td><td>Supported</td>
  </tr>
</table>

Output SXW file (report.sxw) — content.xml:

<table:table table:name="Table1">
  <table:table-column table:number-columns-repeated="2"/>
  <table:table-row>
    <table:table-cell>
      <text:p text:style-name="Table Heading">Feature</text:p>
    </table:table-cell>
    <table:table-cell>
      <text:p text:style-name="Table Heading">Status</text:p>
    </table:table-cell>
  </table:table-row>
  <table:table-row>
    <table:table-cell>
      <text:p>Text formatting</text:p>
    </table:table-cell>
    <table:table-cell>
      <text:p>Supported</text:p>
    </table:table-cell>
  </table:table-row>
</table:table>

Frequently Asked Questions (FAQ)

Q: What is SXW format?

A: SXW is the native document format for StarOffice Writer and early OpenOffice.org versions. It is a ZIP-compressed archive containing XML files for content, styles, and metadata. SXW was the predecessor to the ODF (Open Document Format) standard and uses a similar but distinct XML schema.

Q: Why would I need SXW format instead of ODT?

A: SXW is needed primarily for compatibility with legacy systems running StarOffice 6/7 or early OpenOffice.org versions (1.x) that do not support the newer ODT format. Some government and corporate archives may also require SXW for historical document preservation and compliance.

Q: Can LibreOffice open SXW files?

A: Yes, LibreOffice fully supports opening SXW files and can convert them to modern formats like ODT or DOCX. This makes SXW a useful intermediate format when migrating e-book content to legacy office environments and then to current standards.

Q: Are EPUB3 styles preserved in the SXW output?

A: The converter maps EPUB3 CSS styles to SXW paragraph and character styles where equivalents exist. Font families, sizes, bold, italic, colors, and alignment are preserved. Some advanced CSS3 features like flexbox layouts or animations do not have SXW equivalents and are simplified.

Q: What happens to EPUB3 multimedia content?

A: Images from the EPUB3 are embedded in the SXW archive. Audio and video elements, which SXW does not support, are replaced with text placeholders indicating the original media location. Interactive JavaScript content is stripped since SXW is a static document format.

Q: Is the table of contents preserved?

A: Yes, the EPUB3 table of contents is converted to an SXW table of contents that uses heading styles for automatic generation. The chapter structure and navigation hierarchy are maintained, allowing the table of contents to be updated when editing the document in a word processor.

Q: Can I print the SXW output?

A: Yes, SXW is a page-oriented format designed for printing. The converted document includes proper page sizing, margins, and pagination. You can open it in LibreOffice or OpenOffice.org and print directly or export to PDF for professional printing.

Q: How does the file size compare between EPUB3 and SXW?

A: Both formats use ZIP compression, so file sizes are comparable for text-only content. EPUB3 files with multimedia (audio, video) will be larger. The SXW output typically contains just text content and images, resulting in similar or smaller file sizes compared to the original EPUB3.