Local ToC – Sphinx extension

Sphinx Local Table of Contents Extension with Object Type Annotations and Dropdowns

This Sphinx extension enhances the local Table of Contents (ToC) by adding object type annotations (such as methods, attributes, and classes) and providing collapsible dropdowns for each object. It makes it easier for users to navigate complex documentation by categorizing and visualizing object types in a structured, interactive way.

Preview

	Default configurations The image on the left shows the default configuration of this extension using the standard Furo dark theme. Object type annotations and dropdown controls are enabled, providing a compact and navigable local Table of Contents for API-heavy pages.
	Customized The image on the left shows a customized configuration of this extension using the Furo dark theme. The title area shown above the Table of Contents is not managed by this extension. All visual changes were made using CSS only, combined with the configuration option localtoc_dropdown_depth = 2 to increase the initial expansion depth.

Features

• Object Type Annotations: Automatically categorizes objects in the ToC like classes, methods, attributes, etc.
• Collapsible Dropdowns: Adds dropdown buttons next to each object type, allowing users to collapse or expand nested items.
• Customizable: Offers view configuration variables and CSS classes to control which future and how they are displayed.

Requirements

• Python • 3.12+
• Sphinx • 9.1.0+
• beautifulsoup4 • 4.14.3+

Installation

pip install sphinx-localtoc

Usage

Enable the extension

In your conf.py, add the extension to the extensions list.
Below is an example of a typical Sphinx configuration:

extensions = [
    "sphinx.ext.autodoc",           # pull in docstrings from code
    "sphinx.ext.autosummary",       # generate summary/API pages
    "sphinx.ext.napoleon",          # support Google/NumPy-style docstrings
    "sphinx.ext.intersphinx",       # link to external docs (Kivy, Python, etc.)
    "sphinx.ext.todo",              # support for exposing todo notes
    
    "sphinx_localtoc",              # stylizing the local TOC
]

Configuration options

The extension provides the following configuration variables, shown here with their default values:

# Enable or disable object type annotations in the local ToC.
localtoc_types = True

# Absolute or relative path (including filename) to a debug log file.
# If the file does not exist, it will be created.
# If it already exists, it will be overwritten.
localtoc_type_debug_file = ""

# Enable or disable the dropdown system in the local ToC.
localtoc_dropdown = True

# Number of initial ToC depth levels to skip before applying dropdown logic.
localtoc_dropdown_depth = 1

Debug file example

The debug file feature records all detected object types during the build process.

• This feature runs only during a full build, or when the _build directory has been removed.
• The file path is resolved relative to conf.py.
• If the file already exists, it will be overwritten.

# Example configuration
localtoc_type_debug_file = "_static/ref/debug_ltt.txt"

The contents of the generated file depend on your project structure, but should look similar to the following:

#//|>-----------------------------------------------------------------------------------------------------------------<|
#//| Debug report for Sphinx extension
#//| Local ToC: 26.2.9.2
#//| Project: KivyDK 0.1.0
#//|>-----------------------------------------------------------------------------------------------------------------<|

#//|>--------------------------------------------------------<|
#//| Used default CSS classes: 6 from 6
#//|>--------------------------------------------------------<|
	• slt-dropdown        | <input> items used as checkbox for dropdown system
	• slt-dropdown-branch | Starting depth branch for <ul> items
	• slt-dropdown-depth  | Nested depth branch for <ul> items
	• slt-dropdown-icon   | <label> items used for the arrows of dropdown system
	• slt-dropdown-leaf   | Last <li> items in the depth branch
	• slt-type            | Common class for all object type items


#//|>--------------------------------------------------------<|
#//| Used object type CSS classes: 7 from 37
#//|>--------------------------------------------------------<|
	• slt-obj-attribute
	• slt-obj-class
	• slt-obj-data
	• slt-obj-exception
	• slt-obj-function
	• slt-obj-method
	• slt-obj-property


#//|>--------------------------------------------------------<|
#//| One domain used from 7
#//|>--------------------------------------------------------<|
	• py   | Python script


#//|>--------------------------------------------------------<|
#//| Used object types: 7 from 51
#//|>--------------------------------------------------------<|
	• py   | attribute
	• py   | class
	• py   | data
	• py   | exception
	• py   | function
	• py   | method
	• py   | property

License

MIT License

Copyright (c) 2026 Afanase Ioan (ASI)

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
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copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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