---
template: overrides/main.html
---
# Changing the language
Material for MkDocs supports internationalization (i18n) and provides
translations for template variables and labels in 40+ languages. Additionally,
the site search can be configured to use a language-specific stemmer (if
available).
## Configuration
### Site language
[:octicons-file-code-24: Source][1] · :octicons-milestone-24: Default: `en`
You can set the _site language_ in `mkdocs.yml` with:
``` yaml
theme:
language: en
```
The following languages are supported:
_Note that some languages will produce unreadable anchor links, due to the way
the default slug function works. Consider using a Unicode-aware slug function,
as [documented here][2]._
[1]: https://github.com/squidfunk/mkdocs-material/blob/master/src/partials/language/en.html
[2]: setting-up-navigation.md#slugify
### Site search language
[:octicons-file-code-24: Source][3] ·
:octicons-milestone-24: Default: _automatically set_
Some languages, like Arabic or Japanese, need dedicated stemmers for search to
work properly. Material for MkDocs relies on [lunr-languages][4] to provide this
functionality. See the guide detailing how to [set up site search][5] for
more information.
[3]: https://github.com/squidfunk/mkdocs-material/blob/master/src/assets/javascripts/integrations/search/worker/main/index.ts#L49-L69
[4]: https://github.com/MihaiValentin/lunr-languages
[5]: setting-up-site-search.md
### Directionality
[:octicons-file-code-24: Source][6] ·
:octicons-milestone-24: Default: _automatically set_
While many languages are read `ltr` (left-to-right), Material for MkDocs also
supports `rtl` (right-to-left) _directionality_ which is inferred from the
selected language, but can also be set with:
``` yaml
theme:
direction: ltr
```
:material-cursor-default-click-outline: Click on a tile to change the
directionality:
[6]: https://github.com/squidfunk/mkdocs-material/blob/master/src/base.html#L171
## Customization
### Custom translations
[:octicons-file-code-24: Source][1] ·
:octicons-mortar-board-24: Difficulty: _easy_
If you want to customize some (or all) of the translations for your language,
you may follow the guide on [theme extension][7] and create a new partial in
`partials/language`, e.g. `en-custom.html`. Next, look up the translation you
want to change in the [base translation][1] and add it to the partial.
Let's say you want to change "__Table of contents__" to "__On this page__":
``` html
{% macro t(key) %}{{ {
"toc.title": "On this page"
}[key] }}{% endmacro %}
```
Then, add the following lines to `mkdocs.yml`:
``` yaml
theme:
language: en-custom
```
[7]: ../customization.md#extending-the-theme