Customization¶

Project documentation is as diverse as the projects themselves and Material for MkDocs is a great starting point for making it look beautiful. However, as you write your documentation, you may reach a point where small adjustments are necessary to preserve your brand's style.

Adding assets¶

MkDocs provides several ways to customize a theme. In order to make a few small tweaks to Material for MkDocs, you can just add CSS and JavaScript files to the docs directory.

Additional CSS¶

If you want to tweak some colors or change the spacing of certain elements, you can do this in a separate style sheet. The easiest way is by creating a new style sheet file in the docs directory:

.
├─ docs/
│  └─ stylesheets/
│     └─ extra.css
└─ mkdocs.yml

Then, add the following lines to mkdocs.yml:

extra_css:
  - stylesheets/extra.css

Additional JavaScript¶

If you want to integrate another syntax highlighter or add some custom logic to your theme, create a new JavaScript file in the docs directory:

.
├─ docs/
│  └─ javascripts/
│     └─ extra.js
└─ mkdocs.yml

Then, add the following lines to mkdocs.yml:

extra_javascript:
  - javascripts/extra.js

document$.subscribe(function() {
  console.log("Initialize third-party libraries here")
})

Extending the theme¶

If you want to alter the HTML source (e.g. add or remove some parts), you can extend the theme. MkDocs supports theme extension, an easy way to override parts of Material for MkDocs without forking from git. This ensures that you can update to the latest version more easily.

Setup and theme structure¶

Enable Material for MkDocs as usual in mkdocs.yml, and create a new folder for overrides which you then reference using the custom_dir setting:

theme:
  name: material
  custom_dir: overrides

The structure in the overrides directory must mirror the directory structure of the original theme, as any file in the overrides directory will replace the file with the same name which is part of the original theme. Besides, further assets may also be put in the overrides directory:

.
├─ .icons/                             # Bundled icon sets
├─ assets/
│  ├─ images/                          # Images and icons
│  ├─ javascripts/                     # JavaScript files
│  └─ stylesheets/                     # Style sheets
├─ partials/
│  ├─ integrations/                    # Third-party integrations
│  │  ├─ analytics/                    # Analytics integrations
│  │  └─ analytics.html                # Analytics setup
│  ├─ languages/                       # Translation languages
│  ├─ actions.html                     # Actions
│  ├─ alternate.html                   # Site language selector
│  ├─ comments.html                    # Comment system (empty by default)
│  ├─ consent.html                     # Consent
│  ├─ content.html                     # Page content
│  ├─ copyright.html                   # Copyright and theme information
│  ├─ feedback.html                    # Was this page helpful?
│  ├─ footer.html                      # Footer bar
│  ├─ header.html                      # Header bar
│  ├─ icons.html                       # Custom icons
│  ├─ language.html                    # Translation setup
│  ├─ logo.html                        # Logo in header and sidebar
│  ├─ nav.html                         # Main navigation
│  ├─ nav-item.html                    # Main navigation item
│  ├─ pagination.html                  # Pagination (used for blog)
│  ├─ palette.html                     # Color palette toggle
│  ├─ post.html                        # Blog post excerpt
│  ├─ progress.html                    # Progress indicator
│  ├─ search.html                      # Search interface
│  ├─ social.html                      # Social links
│  ├─ source.html                      # Repository information
│  ├─ source-file.html                 # Source file information
│  ├─ tabs.html                        # Tabs navigation
│  ├─ tabs-item.html                   # Tabs navigation item
│  ├─ tags.html                        # Tags
│  ├─ toc.html                         # Table of contents
│  ├─ toc-item.html                    # Table of contents item
│  └─ top.html                         # Back-to-top button
├─ 404.html                            # 404 error page
├─ base.html                           # Base template
├─ blog.html                           # Blog index page
├─ blog-archive.html                   # Blog archive index page
├─ blog-category.html                  # Blog category index page
├─ blog-post.html                      # Blog post page
└─ main.html                           # Default page

Overriding partials¶

In order to override a partial, we can replace it with a file of the same name and location in the overrides directory. For example, to replace the original footer.html partial, create a new footer.html partial in the overrides directory:

.
├─ overrides/
│  └─ partials/
│     └─ footer.html
└─ mkdocs.yml

MkDocs will now use the new partial when rendering the theme. This can be done with any file.

Overriding blocks recommended¶

Besides overriding partials, it's also possible to override (and extend) template blocks, which are defined inside the templates and wrap specific features. In order to set up block overrides, create a main.html file inside the overrides directory:

.
├─ overrides/
│  └─ main.html
└─ mkdocs.yml

Then, e.g. to override the site title, add the following lines to main.html:

{% extends "base.html" %}

{% block htmltitle %}
  <title>Lorem ipsum dolor sit amet</title>
{% endblock %}

If you intend to add something to a block rather than to replace it altogether with new content, use {{ super() }} inside the block to include the original block content. This is particularly useful when adding third-party scripts to your docs, e.g.

{% extends "base.html" %}

{% block scripts %}
  <!-- Add scripts that need to run before here -->
  {{ super() }}
  <!-- Add scripts that need to run afterwards here -->
{% endblock %}

The following template blocks are provided by the theme:

Theme development¶

Material for MkDocs is built on top of TypeScript, RxJS and SASS, and uses a lean, custom build process to put everything together.¹ If you want to make more fundamental changes, it may be necessary to make the adjustments directly in the source of the theme and recompile it.

Environment setup¶

First, clone the repository for the edition you want to work on. If you want to clone the Insiders repository, you need to become a sponsor first to gain access.

git clone https://github.com/squidfunk/mkdocs-material
cd mkdocs-material

git clone https://${GH_TOKEN}@github.com/squidfunk/mkdocs-material-insiders.git # (1)!

Next, create a new Python virtual environment and activate it:

python -m venv venv
source venv/bin/activate

export PIP_REQUIRE_VIRTUALENV=true

Then, install all Python dependencies:

pip install -e ".[recommended]"
pip install nodeenv

pip install -e ".[recommended, imaging]"
pip install nodeenv

Finally, install the Node.js LTS version into the Python virtual environment and install all Node.js dependencies:

nodeenv -p -n lts
npm install

Development mode¶

Start the watcher with:

npm start

Then, in a second terminal window, start the MkDocs live preview server with:

mkdocs serve --watch-theme

Point your browser to localhost:8000 and you should see this very documentation in front of you.

Building the theme¶

When you're finished making your changes, you can build the theme by invoking:

npm run build # (1)!

1. While this command will build all theme files, it will skip the overrides used in Material for MkDocs' own documentation which are not distributed with the theme. If you forked the theme and want to build the overrides as well, e.g. before submitting a PR with changes, use:

   npm run build:all
   

   This will take longer, as now the icon search index, schema files, as well as additional style sheet and JavaScript files are built.

This triggers the production-level compilation and minification of all style sheets and JavaScript files. After the command exits, the compiled files are located in the material directory. When running mkdocs build, you should now see your changes to the original theme.