# Multi-language Support
guidebook supports building books in multiple languages.
## Setup
Create a `LANGS.md` file in your book's root:
```markdown
# Languages
* [English](en/)
* [日本語](ja/)
* [Tiếng Việt](vi/)
```
Then organize your content:
```
my-book/
├── LANGS.md
├── book.json
├── en/
│ ├── README.md
│ ├── SUMMARY.md
│ └── ...
├── ja/
│ ├── README.md
│ ├── SUMMARY.md
│ └── ...
└── vi/
├── README.md
├── SUMMARY.md
└── ...
```
## Language Selector
A language selector appears in the top-left corner, allowing readers to switch languages.
## Tips
- Each language folder has its own `SUMMARY.md`
- You can have different content per language
- Images can be shared across languages using relative paths