---
title: "Display and style rich text labels | JavaScript maps SDK"
description: "Display multilingual rich text labels using format expressions."
---

> For AI agents: a documentation index is available at [/llms.txt](https://docs.maptiler.com/llms.txt). Markdown versions of all pages are available by appending .md to any URL.

# Display and style rich text labels

Use the [`format` expression](https://docs.maptiler.com/gl-style-specification/expressions/#types-format) to display country labels in both English and in the local language.

### NPM module setup

```bash
npm install --save @maptiler/sdk
```

#### main.js

```js
import { Map, MapStyle, config } from '@maptiler/sdk';
import '@maptiler/sdk/dist/maptiler-sdk.css';

config.apiKey = 'YOUR_MAPTILER_API_KEY_HERE';

const map = new Map({
    container: 'map', // container id
    style: MapStyle.BASE,
    center: [9.49, 49.01], // starting position [lng, lat]
    zoom: 4 // starting zoom
});

map.on('load', function () {
    map.setLayoutProperty('Country labels', 'text-field', [
        'format',
        ['get', 'name:en'],
        { 'font-scale': 1.2 },
        '\n',
        {},
        ['get', 'name:de'],
        {
            'font-scale': 0.8,
            'text-font': [
                'literal',
                ['DIN Offc Pro Italic', 'Arial Unicode MS Regular']
            ]
        }
    ]);
});
```

#### index.html

```html
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="robots" content="noindex">
  <title>Display and style rich text labels</title>
  <link rel="stylesheet" href="./style.css">
</head>
<body>
  <div id="map"></div>
  <script type="module" src="./main.js"></script>
</body>
</html>
```

#### style.css

```css
body {margin: 0; padding: 0;}
#map {position: absolute; top: 0; bottom: 0; width: 100%;}
```

### Basic JavaScript setup

```html
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Display and style rich text labels</title>
  <script src="https://cdn.maptiler.com/maptiler-sdk-js/v4.2.0/maptiler-sdk.umd.min.js"></script>
  <link href="https://cdn.maptiler.com/maptiler-sdk-js/v4.2.0/maptiler-sdk.css" rel="stylesheet" />
  <style>
    body {
      margin: 0;
      padding: 0;
    }

    #map {
      position: absolute;
      top: 0;
      bottom: 0;
      width: 100%;
    }
  </style>
</head>

<body>
  <div id="map"></div>
  <script>
    maptilersdk.config.apiKey = 'YOUR_MAPTILER_API_KEY_HERE';

    const map = new maptilersdk.Map({
      container: 'map', // container id
      style: maptilersdk.MapStyle.BASE,
      center: [9.49, 49.01], // starting position [lng, lat]
      zoom: 4 // starting zoom
    });

    map.on('load', function () {
      map.setLayoutProperty('Country labels', 'text-field', [
        'format',
        ['get', 'name:en'],
        { 'font-scale': 1.2 },
        '\n',
        {},
        ['get', 'name:de'],
        {
          'font-scale': 0.8,
          'text-font': [
            'literal',
            ['DIN Offc Pro Italic', 'Arial Unicode MS Regular']
          ]
        }
      ]);
    });
  </script>
</body>

</html>
```

## Related examples

### [Change the case of labels](https://docs.maptiler.com/sdk-js/examples/change-case-of-labels/)

Examples

Modify label text casing using upcase and downcase expressions.

### [Icon image URL inside a rich text format label](https://docs.maptiler.com/sdk-js/examples/rich-text-format/)

Examples

Display rich text labels with texts and icons.

### [Set map language](https://docs.maptiler.com/sdk-js/examples/language-map/)

Tutorials

This tutorial shows how to change the default map labels language.

### [Add a stretchable image to the map](https://docs.maptiler.com/sdk-js/examples/add-image-stretchable/)

Examples

Use stretchable images as background for map text labels.
