Convert SXW to MOBI

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SXW vs MOBI Format Comparison

Aspect SXW (Source Format) MOBI (Target Format)
Format Overview
SXW
StarOffice/OpenOffice.org Writer Document

SXW is a legacy 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 (OpenDocument Text) format and can still be opened by LibreOffice and OpenOffice.

Legacy Document ZIP/XML Archive
MOBI
Mobipocket eBook Format

MOBI is an eBook format originally developed by Mobipocket and later acquired by Amazon. It is the primary format for Kindle e-readers and supports reflowable text, bookmarks, annotations, and basic formatting. MOBI files can contain DRM protection and are optimized for reading on small screens with adjustable font sizes.

eBook Kindle Compatible
Technical Specifications
Structure: ZIP archive containing XML files
Creator: StarOffice/OpenOffice.org Writer
MIME Type: application/vnd.sun.xml.writer
Internal Files: content.xml, styles.xml, meta.xml
Extension: .sxw
Structure: PalmDOC compression with PDB container
Encoding: UTF-8 with HTML-based content
DRM: Optional Mobipocket/Amazon DRM
MIME Type: application/x-mobipocket-ebook
Extension: .mobi, .prc
Syntax Examples

SXW stores content in XML within a ZIP archive:

<office:body>
  <text:p text:style-name="Heading">
    Chapter 1: Introduction
  </text:p>
  <text:p>Once upon a time in
  a digital world...</text:p>
</office:body>

MOBI uses HTML-based internal content:

<h1>Chapter 1: Introduction</h1>
<p>Once upon a time in
a digital world...</p>
<!-- Compiled into binary MOBI -->
Content Support
  • Formatted text with styles and fonts
  • Headings, paragraphs, and lists
  • Tables with cell formatting
  • Embedded images and objects
  • Headers, footers, and page numbers
  • Footnotes and endnotes
  • Document metadata (author, date, title)
  • Reflowable text with adjustable fonts
  • Chapter navigation and table of contents
  • Embedded images (JPEG, GIF)
  • Bookmarks and annotations
  • Basic text formatting (bold, italic)
  • eBook metadata (author, title, cover)
  • Dictionary lookup integration
Advantages
  • Rich document formatting with styles
  • Open XML-based format, not proprietary binary
  • Supports complex document structures
  • Metadata storage for document properties
  • Compatible with LibreOffice and OpenOffice
  • Compressed ZIP reduces file size
  • Native Kindle device compatibility
  • Reflowable text for any screen size
  • Compact file size for mobile storage
  • Offline reading capability
  • Built-in dictionary and search
  • Wide distribution through Amazon
Disadvantages
  • Legacy format superseded by ODT
  • Limited modern software support
  • Complex XML structure for simple content
  • Not editable without office software
  • Binary ZIP archive, not directly readable
  • Being phased out in favor of KF8/AZW3
  • Limited formatting compared to EPUB
  • Proprietary Amazon ecosystem
  • No support for advanced CSS
  • Complex table rendering limitations
Common Uses
  • Legacy office documents from StarOffice
  • OpenOffice.org 1.x Writer documents
  • Archived business and personal documents
  • Government and institutional legacy files
  • Early open-source office suite documents
  • Kindle eBook publishing
  • Personal document reading on Kindle
  • Self-published digital books
  • Mobile reading on Kindle apps
  • Digital book distribution
Best For
  • Accessing legacy StarOffice documents
  • Migrating old OpenOffice.org files
  • Preserving archived document content
  • Cross-platform document compatibility
  • Reading on Kindle e-readers
  • Publishing eBooks for Amazon
  • Mobile reading on Kindle apps
  • Personal document library on Kindle
Version History
Introduced: 2002 with StarOffice 6.0 / OpenOffice.org 1.0
Based On: OpenOffice.org XML format
Superseded By: ODT (ODF 1.0, 2005)
Status: Legacy format, still readable by LibreOffice
Introduced: 2000 by Mobipocket SA
Acquired: 2005 by Amazon
Successor: KF8/AZW3 (Kindle Format 8)
Status: Legacy, being replaced by KF8
Software Support
LibreOffice: Full read/write support
OpenOffice: Native format (legacy versions)
Pandoc: Reads SXW as ODT variant
Calligra: Import support
Kindle: All Kindle devices and apps
Calibre: Full read/write/convert support
KindleGen: Amazon's MOBI creation tool
Readers: FBReader, Moon+ Reader

Why Convert SXW to MOBI?

Converting SXW to MOBI transforms legacy StarOffice/OpenOffice.org Writer documents into eBooks that can be read on Amazon Kindle devices and apps. This conversion brings old documents into the portable, mobile-friendly eBook ecosystem, making them accessible for comfortable reading on e-ink screens and mobile devices.

SXW documents were designed for desktop word processing and printing, not for digital reading. The MOBI format provides reflowable text that adapts to any screen size, adjustable font sizes, and reading features like bookmarks, highlights, and dictionary lookup that enhance the reading experience.

This conversion is particularly valuable for organizations or individuals who have legacy documents such as manuals, reports, or manuscripts in SXW format that they want to make available as eBooks. Converting to MOBI enables distribution through Amazon's Kindle ecosystem or personal sideloading to Kindle devices.

Our converter extracts the document content from the SXW archive, preserves the heading structure for chapter navigation, and generates a properly formatted MOBI eBook with table of contents, metadata, and optimized text layout for e-reader screens.

Key Benefits of Converting SXW to MOBI:

  • Kindle Compatibility: Read legacy documents on any Kindle device or app
  • Reflowable Text: Content adapts to any screen size with adjustable fonts
  • Chapter Navigation: Document headings become navigable chapters
  • Portable Reading: Take legacy documents anywhere on mobile devices
  • eBook Features: Bookmarks, highlights, dictionary lookup, and search
  • Legacy Preservation: Convert old documents into a modern readable format

Practical Examples

Example 1: Training Manual

Input SXW file (manual.sxw) containing:

Employee Training Manual

Chapter 1: Company Overview
Welcome to the company. This chapter
covers our mission, values, and history.

Chapter 2: Policies and Procedures
All employees must follow these
guidelines during their employment.

Output MOBI file (manual.mobi) structure:

Table of Contents:
  1. Company Overview
  2. Policies and Procedures

[Reflowable text with chapter navigation,
adjustable fonts, and Kindle-optimized layout]

Example 2: Research Paper

Input SXW file (research.sxw) containing:

Impact of Open Source Software

Abstract
This paper examines the growth and impact
of open-source software on the industry.

Introduction
Open-source software has transformed the
technology landscape since the late 1990s.

Output MOBI file (research.mobi) structure:

Title: Impact of Open Source Software

Table of Contents:
  1. Abstract
  2. Introduction

[Full document text with reflowable layout,
bookmarking capability, and text search]

Example 3: Short Story Collection

Input SXW file (stories.sxw) containing:

Digital Tales

The Last Backup
It was a quiet evening when the server
room hummed its final warning...

Code Review
Sarah stared at the pull request,
knowing the bug was somewhere in there...

Output MOBI file (stories.mobi) structure:

Title: Digital Tales

Table of Contents:
  1. The Last Backup
  2. Code Review

[eBook with chapter navigation,
reading progress tracking,
and Kindle reading features]

Frequently Asked Questions (FAQ)

Q: What is an SXW file?

A: SXW is a document format from StarOffice and OpenOffice.org Writer. Introduced in 2002, it is a ZIP archive containing XML files (content.xml, styles.xml, meta.xml). It was superseded by ODT in 2005 but remains readable by LibreOffice.

Q: Can I read the MOBI file on my Kindle?

A: Yes. MOBI is the native eBook format for Kindle devices. You can transfer the MOBI file to your Kindle via USB cable, email it to your Kindle address, or use the Send to Kindle application. The file will appear in your Kindle library with full reading features.

Q: Are images from the SXW document included?

A: Yes, images embedded in the SXW document are included in the MOBI output where supported. Images are optimized for e-reader screens. Very large or high-resolution images may be resized for optimal display on Kindle devices.

Q: Is a table of contents generated automatically?

A: Yes. The converter uses the heading structure from the SXW document to generate a navigable table of contents in the MOBI file. This allows readers to jump between chapters and sections directly from the Kindle's navigation menu.

Q: What about document formatting?

A: Basic formatting such as bold, italic, headings, and lists is preserved in the MOBI output. Advanced formatting like custom fonts, precise page layout, and complex tables may be simplified since MOBI uses reflowable text that adapts to the reader's screen and font preferences.

Q: Is MOBI the same as AZW?

A: MOBI and AZW are closely related formats. AZW is Amazon's version of MOBI with optional DRM protection. Our converter creates standard MOBI files without DRM, which are compatible with all Kindle devices and many third-party eBook readers.

Q: Should I use MOBI or EPUB for eBooks?

A: MOBI is best for Kindle devices, while EPUB is the industry-standard eBook format supported by most other e-readers. If you primarily read on Kindle, MOBI is the better choice. For broader compatibility across devices, consider EPUB.

Q: Can I convert the MOBI file back to SXW?

A: While technically possible using tools like Calibre, converting back to SXW would not restore the original formatting and layout. The MOBI format stores content differently from SXW, so the reverse conversion would produce a different document structure.