---
template: overrides/main.html
---

# 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.

  [MkDocs]: https://www.mkdocs.org

### 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:

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

Then, add the following lines to `mkdocs.yml`:

``` yaml
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:

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

Then, add the following lines to `mkdocs.yml`:

``` yaml
extra_javascript:
  - javascripts/extra.js
```

## 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.

  [theme extension]: https://www.mkdocs.org/user-guide/styling-your-docs/#using-the-theme-custom_dir

### 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`][custom_dir]
setting:

``` yaml
theme:
  name: material
  custom_dir: overrides
```

!!! warning "Theme extension prerequisites"

    As the [`custom_dir`][custom_dir] setting is used for the theme extension
    process, Material for MkDocs needs to be installed via `pip` and referenced
    with the [`name`][name] setting in `mkdocs.yml`. It will not work when
    cloning from `git`.

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:

``` sh
.
├─ .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
│  ├─ content.html                     # Page content
│  ├─ copyright.html                   # Copyright and theme information
│  ├─ footer.html                      # Footer bar
│  ├─ header.html                      # Header bar
│  ├─ language.html                    # Translation setup
│  ├─ logo.html                        # Logo in header and sidebar
│  ├─ nav.html                         # Main navigation
│  ├─ nav-item.html                    # Main navigation item
│  ├─ palette.html                     # Color palette
│  ├─ 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
│  ├─ toc.html                         # Table of contents
│  └─ toc-item.html                    # Table of contents item
├─ 404.html                            # 404 error page
├─ base.html                           # Base template
└─ main.html                           # Default page
```

  [custom_dir]: https://www.mkdocs.org/user-guide/configuration/#custom_dir
  [name]: https://www.mkdocs.org/user-guide/configuration/#name

### 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:

``` sh
.
├─ 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 <small>recommended</small> { #overriding-blocks data-toc-label="Overriding blocks" }

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:

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

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

``` html
{% extends "base.html" %}

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

The following template blocks are provided by the theme:

| Block name        | Purpose                                         |
| :---------------- | :---------------------------------------------- |
| `analytics`       | Wraps the Google Analytics integration          |
| `announce`        | Wraps the announcement bar                      |
| `config`          | Wraps the JavaScript application config         |
| `content`         | Wraps the main content                          |
| `extrahead`       | Empty block to add custom meta tags             |
| `fonts`           | Wraps the font definitions                      |
| `footer`          | Wraps the footer with navigation and copyright  |
| `header`          | Wraps the fixed header bar                      |
| `hero`            | Wraps the hero teaser (if available)            |
| `htmltitle`       | Wraps the `<title>` tag                         |
| `libs`            | Wraps the JavaScript libraries (header)         |
| `outdated`        | Wraps the version warning                       |
| `scripts`         | Wraps the JavaScript application (footer)       |
| `site_meta`       | Wraps the meta tags in the document head        |
| `site_nav`        | Wraps the site navigation and table of contents |
| `styles`          | Wraps the style sheets (also extra sources)     |
| `tabs`            | Wraps the tabs navigation (if available)        |

## 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.

  [^1]:
    Prior to :octicons-tag-24: 7.0.0 the build was based on Webpack, resulting
    in occasional broken builds due to incompatibilities with loaders and
    plugins. Therefore, we decided to swap Webpack for a leaner solution which
    is now based on [RxJS] as the application itself. This allowed for the
    pruning of more than 500 dependencies (~30% less).

  [TypeScript]: https://www.typescriptlang.org/
  [RxJS]: https://github.com/ReactiveX/rxjs
  [SASS]: https://sass-lang.com

### Environment setup

In order to start development on Material for MkDocs, a [Node.js] version of
at least 14 is required. First, clone the repository:

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

Next, all dependencies need to be installed, which is done with:

```
cd mkdocs-material
pip install -e .
pip install mkdocs-minify-plugin
pip install mkdocs-redirects
npm install
```

  [Node.js]: https://nodejs.org

### 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][live preview] and you should see this
very documentation in front of you.

!!! warning "Automatically generated files"

    Never make any changes in the `material` directory, as the contents of this
    directory are automatically generated from the `src` directory and will be
    overwritten when the theme is built.

  [live preview]: http://localhost:8000

### Building the theme

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

```
npm run build
```

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.
