# Syntax Highlighting
> Beautiful code blocks powered by Shiki
Source: https://juicydocs.freshjuice.dev/docs/features/syntax-highlighting/
JuicyDocs uses [Shiki](https://shiki.style/) for syntax highlighting. Shiki uses the same grammar files as VS Code, providing accurate and beautiful code highlighting.
## Basic Usage
Use fenced code blocks with a language identifier:
````markdown
```javascript
function hello() {
console.log("Hello, JuicyDocs!");
}
```
````
Renders as:
```javascript
function hello() {
console.log("Hello, JuicyDocs!");
}
```
## Supported Languages
Shiki supports [all languages available in VS Code](https://shiki.style/languages). Common languages include:
| Language | Identifier |
|----------|------------|
| JavaScript | `javascript`, `js` |
| TypeScript | `typescript`, `ts` |
| Python | `python`, `py` |
| HTML | `html` |
| CSS | `css` |
| JSON | `json` |
| YAML | `yaml` |
| Bash | `bash`, `shell` |
| Markdown | `markdown`, `md` |
## Code Block Examples
### HTML
```html
Hello World
Hello, World!
```
### CSS
```css
.container {
display: flex;
align-items: center;
justify-content: center;
min-height: 100vh;
background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}
```
### Python
```python
def fibonacci(n):
if n <= 1:
return n
return fibonacci(n - 1) + fibonacci(n - 2)
for i in range(10):
print(fibonacci(i))
```
### JSON
```json
{
"name": "juicydocs",
"version": "1.0.0",
"dependencies": {
"@11ty/eleventy": "^3.0.0",
"tailwindcss": "^4.0.0"
}
}
```
## Theme
JuicyDocs uses a theme that adapts to light and dark modes. The code blocks automatically adjust their colors based on your selected theme preference.