---
title: "Add a vector tile source | JavaScript maps SDK"
description: "Add and display custom vector tile sources on maps."
---
> 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.
# Add a vector tile source
Enhance your map by incorporating a [vector source](https://docs.maptiler.com/gl-style-specification/sources/#vector).
With the help of the [MapTiler Engine](https://www.maptiler.com/engine/), you can convert your data into vector tiles effortlessly. These tiles can then be [uploaded to the MapTiler](https://docs.maptiler.com/guides/map-data/upload-files/) with just a simple click, allowing you to seamlessly integrate your data into all of your web mapping applications.
### 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',
style: MapStyle.STREETS,
zoom: 13,
center: [-122.447303, 37.753574]
});
map.on('load', function () {
map.addSource('contours', {
type: 'vector',
url:
`https://api.maptiler.com/tiles/contours/tiles.json`
});
map.addLayer({
'id': 'terrain-data',
'type': 'line',
'source': 'contours',
'source-layer': 'contour',
'layout': {
'line-join': 'round',
'line-cap': 'round'
},
'paint': {
'line-color': '#ff69b4',
'line-width': 1
}
});
});
```
#### index.html
```html
Add a vector tile source | NPM example
```
#### style.css
```css
body {margin: 0; padding: 0;}
#map {position: absolute; top: 0; bottom: 0; width: 100%;}
```
### Basic JavaScript setup
```html
Add a vector tile source
```
## Related examples
### [Add a third party vector tile source](https://docs.maptiler.com/sdk-js/examples/third-party/)
Examples
Add and render third-party vector data sources on maps.
### [Custom map](https://docs.maptiler.com/sdk-js/examples/custom-map/)
Tutorials
Display your customized MapTiler map on any web page.