Convert RST to MOBI

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RST vs MOBI Format Comparison

Aspect RST (Source Format) MOBI (Target Format)
Format Overview
RST
reStructuredText

Lightweight markup language developed by the Python community in 2001. Primary format for Python documentation, Sphinx, and Read the Docs. Emphasizes simplicity and readability with explicit, consistent syntax for technical documentation.

Python Standard Sphinx Native
MOBI
Mobipocket E-book Format

E-book format originally created by Mobipocket SA and later acquired by Amazon. Primary format for Kindle devices and apps. Supports reflowable text, bookmarks, annotations, and DRM protection for commercial e-books.

Kindle Native E-book Standard
Technical Specifications
Structure: Plain text with indentation-based syntax
Encoding: UTF-8
Format: Docutils markup language
Processor: Sphinx, Docutils, Pandoc
Extensions: .rst, .rest, .txt
Structure: Binary e-book container
Encoding: UTF-8, compressed
Format: PalmDOC with HTML subset
Processor: Kindle, Calibre, KindleGen
Extensions: .mobi, .prc, .azw
Syntax Examples

RST syntax (Python-style):

Document Title
==============

Section Header
--------------

This is **bold** and *italic*.

.. code-block:: python

   def hello():
       print("Hello")

.. note::
   Important information here.

MOBI contains compiled HTML:

<!-- MOBI is a binary format -->
<!-- Internal structure: -->

<h1>Document Title</h1>

<h2>Section Header</h2>

<p>This is <b>bold</b>
and <i>italic</i>.</p>

<pre>def hello():
    print("Hello")</pre>

<div class="note">
Important information here.
</div>
Content Support
  • Headers with underline characters
  • Inline markup (bold, italic, code)
  • Directives (code-block, note, warning)
  • Cross-references and citations
  • Tables (grid and simple)
  • Autodoc for Python code
  • Math formulas (LaTeX)
  • Sphinx extensions ecosystem
  • Reflowable text content
  • Basic HTML formatting
  • Images (embedded)
  • Table of contents
  • Bookmarks and navigation
  • Annotations and highlights
  • Font embedding (limited)
  • Dictionary lookup
  • Whispersync support
Advantages
  • Python documentation standard
  • Sphinx integration (Read the Docs)
  • Autodoc for API documentation
  • Large Python ecosystem
  • Consistent, strict syntax
  • Mature tooling
  • Kindle device compatibility
  • Offline reading
  • Small file size (compressed)
  • E-ink optimized
  • Bookmarks and annotations
  • Dictionary integration
  • Reading progress sync
Disadvantages
  • Strict indentation requirements
  • Complex directive syntax
  • Limited outside Python ecosystem
  • Steeper learning curve
  • Less intuitive syntax
  • Amazon/Kindle proprietary
  • Limited formatting options
  • Complex tables not supported
  • DRM can restrict usage
  • Being replaced by KFX format
Common Uses
  • Python documentation
  • Sphinx projects
  • Read the Docs hosting
  • API documentation
  • Technical specifications
  • Kindle e-books
  • Technical documentation offline
  • Programming books
  • Tutorials and guides
  • Self-published content
  • Mobile reading material
Best For
  • Python projects
  • Sphinx-based documentation
  • API reference docs
  • Read the Docs publishing
  • Kindle device reading
  • Offline documentation
  • Mobile technical reading
  • E-book distribution
Version History
Introduced: 2001 (David Goodger)
Maintained by: Docutils project
Status: Stable, actively maintained
Primary Tool: Sphinx (2008+)
Introduced: 2000 (Mobipocket)
Acquired by: Amazon (2005)
Status: Legacy (KFX is newer)
Primary Tool: Calibre, KindleGen
Software Support
Sphinx: Native support
Docutils: Reference implementation
Pandoc: Full support
IDEs: PyCharm, VS Code (extensions)
Kindle Devices: All models
Kindle Apps: iOS, Android, Desktop
Calibre: Full support
Conversion: KindleGen, Pandoc

Why Convert RST to MOBI?

Converting reStructuredText (RST) documents to MOBI format transforms your technical documentation into Kindle-compatible e-books. This is invaluable for developers and technical writers who want to read documentation offline on Kindle devices or apps.

MOBI files are optimized for e-ink displays and mobile reading. The format supports reflowable text that adapts to different screen sizes, making your RST documentation comfortable to read on any Kindle device. Features like bookmarks, annotations, and dictionary lookup enhance the reading experience.

The conversion is particularly useful for creating portable versions of programming tutorials, API documentation, and technical guides. Many developers prefer reading lengthy technical content on Kindle devices due to reduced eye strain compared to computer screens.

While RST with Sphinx generates excellent web documentation, MOBI provides an offline reading experience with Kindle's reading features. You can sync your reading progress across devices, highlight important sections, and take notes that are stored with your e-book.

Key Benefits of Converting RST to MOBI:

  • Kindle Compatibility: Read on all Kindle devices and apps
  • Offline Reading: Access documentation without internet
  • E-ink Optimized: Comfortable reading on e-ink displays
  • Bookmarks & Notes: Annotate and highlight important sections
  • Portable Documentation: Carry technical docs everywhere
  • Whispersync: Sync reading progress across devices
  • Dictionary Lookup: Instant definitions while reading

Practical Examples

Example 1: Basic Document Structure

Input RST file (document.rst):

Getting Started Guide
=====================

Introduction
------------

Welcome to the **project documentation**.
This guide will help you get started.

Installation
------------

Install using pip::

    pip install myproject

.. note::
   Requires Python 3.8 or higher.

Result in MOBI (Kindle display):

The MOBI file displays on Kindle as:

[Chapter: Getting Started Guide]

Introduction
Welcome to the project documentation.
This guide will help you get started.

Installation
Install using pip:
  pip install myproject

[Note Box]
Requires Python 3.8 or higher.

Example 2: Code Examples in E-book

Input RST file (code_example.rst):

API Reference
=============

.. code-block:: python
   :linenos:

   def calculate_total(items):
       """Calculate the total price."""
       return sum(item.price for item in items)

.. warning::
   This function does not handle empty lists.

Result in MOBI (Kindle display):

[Chapter: API Reference]

[Code Block - Monospace Font]
def calculate_total(items):
    """Calculate the total price."""
    return sum(item.price for item in items)

[Warning Box]
This function does not handle empty lists.

Example 3: Table of Contents Generation

Input RST file (book.rst):

Python Programming Guide
========================

Chapter 1: Introduction
-----------------------

Python is a versatile language...

Chapter 2: Variables
--------------------

Variables store data...

Chapter 3: Functions
--------------------

Functions encapsulate logic...

Result in MOBI (Kindle TOC):

Kindle Table of Contents:

Python Programming Guide
  Chapter 1: Introduction
  Chapter 2: Variables
  Chapter 3: Functions

[Tap any chapter to navigate]

Frequently Asked Questions (FAQ)

Q: Can I read the MOBI file on devices other than Kindle?

A: Yes! MOBI files can be read using Kindle apps on iOS, Android, Windows, and Mac. You can also use Calibre, a free e-book management application that reads MOBI files on any computer.

Q: How are code blocks displayed in MOBI?

A: Code blocks are converted to monospace font sections in the e-book. While Kindle doesn't support syntax highlighting, the code remains readable with proper indentation preserved. Consider using shorter line lengths for better mobile display.

Q: Will tables from my RST file work in MOBI?

A: Simple tables are converted to MOBI format, but complex tables with merged cells or wide columns may not display well on smaller Kindle screens. Consider simplifying tables or converting them to lists for better mobile reading.

Q: Can I include images in the MOBI output?

A: Yes, images from your RST document are embedded in the MOBI file. They're optimized for e-ink displays, which means they may appear in grayscale on traditional Kindle devices. Color Kindle devices display images in full color.

Q: How do I transfer the MOBI file to my Kindle?

A: You can email the MOBI file to your Kindle's email address, transfer via USB cable, or use the Send to Kindle application. The file will appear in your Kindle library alongside your other books.

Q: What's the difference between MOBI and EPUB?

A: MOBI is Amazon's proprietary format for Kindle, while EPUB is an open standard used by most other e-readers. Kindle devices read MOBI natively but require conversion to read EPUB. We offer both conversions if you need them.

Q: Will hyperlinks work in the MOBI file?

A: Internal links (table of contents, cross-references) work within the e-book. External URLs can be clicked on Kindle devices with internet connectivity, opening in the Kindle's built-in browser or linked apps.

Q: Can I publish the MOBI on Amazon Kindle Direct Publishing?

A: While MOBI files work on Kindle devices, Amazon now prefers EPUB or DOC format for Kindle Direct Publishing (KDP). KDP automatically converts your upload to Amazon's latest formats. However, MOBI is perfect for personal use and sideloading.