---
title: "How to center map based on visitor’s country bounds | JavaScript maps SDK"
description: "This tutorial shows how to center map based on the visitor’s country bounds using the MapTiler Geolocation API."
---

> 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.

# How to center map based on visitor’s country bounds

In this tutorial, we will demonstrate the utilization of the `geolocate: maptilersdk.GeolocationType.COUNTRY` feature to center the map according to the boundaries of the visitor’s country. This functionality is made possible through the implementation of the [MapTiler Geolocation API](https://docs.maptiler.com/cloud/api/geolocation/).

By utilizing this option, the map will automatically adjust its center based on the geographical location of the user, ensuring a personalized and seamless experience. This feature offers a convenient way to provide contextually relevant information or tailor the map view to suit the user’s needs. Get started with implementing this feature today to enhance your mapping application and provide a more personalized experience for your users.

## NPM module setup

1.  Install the npm package.
    
    ```bash
    npm install --save @maptiler/sdk
    ```
    
2.  Include the CSS file.
    
    If you have a bundler that can handle CSS, you can `import` the CSS
    
    ```js
    import "@maptiler/sdk/dist/maptiler-sdk.css";
    ```
    
    or include it with a `<link />` in the head of the document via the CDN
    
    ```html
    <link href='https://cdn.maptiler.com/maptiler-sdk-js/v4.2.0/maptiler-sdk.css' rel='stylesheet' />
    ```
    
3.  Include the following code in your JavaScript file (Example: app.js).
    
    ```js
    import * as maptilersdk from '@maptiler/sdk';
    
     maptilersdk.config.apiKey = 'YOUR_MAPTILER_API_KEY_HERE';
     const map = new maptilersdk.Map({
       container: 'map', // container's id or the HTML element to render the map
       style: maptilersdk.MapStyle.STREETS,
          
       center: [16.62662018, 49.2125578], // starting position [lng, lat]
       zoom: 10, // starting zoom
          
     });
    ```
    
4.  Replace `YOUR_MAPTILER_API_KEY_HERE` with [your own API key](https://cloud.maptiler.com/account/keys/). Make sure to [secure the key](https://docs.maptiler.com/guides/credentials/api-key/#secure-key) before you publish it.
    
5.  The next is up to you. You can center your map wherever you desire (modifying the `starting position`) and set an appropriate zoom level (modifying the `starting zoom`) to match your users’ needs. Additionally, you can change the map’s look (by updating the `source URL`); choose from a range of visually appealing map styles from our extensive [MapTiler standard maps](https://cloud.maptiler.com/maps/), or create your own to truly differentiate your application.
    
6.  Modify the map options. Remove the center and zoom options and add the geolocate option.
    
    ```diff
    const map = new maptilersdk.Map({
       container: 'map', // container's id or the HTML element in which SDK will render the map
       style: maptilersdk.MapStyle.STREETS,
     - center: [16.62662018, 49.2125578], // starting position [lng, lat]
     - zoom: 10, // starting zoom
     + geolocate: maptilersdk.GeolocationType.COUNTRY
     });
    ```
    
7.  Now the map options should look like this.
    
    ```js
    const map = new maptilersdk.Map({
       container: 'map', // container's id or the HTML element in which SDK will render the map
       style: maptilersdk.MapStyle.STREETS,
       geolocate: maptilersdk.GeolocationType.COUNTRY
     });
    ```
    

## Basic JavaScript setup

1.  Copy the following code, paste it into your favorite text editor, and save it as a `.html` file.
    
    ```html
    <!DOCTYPE html>
     <html lang="en">
     <head>
       <meta charset="UTF-8">
       <meta name="viewport" content="width=device-width, initial-scale=1.0">
       <title>Center map based on visitor’s country bounds</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's id or the HTML element to render the map
             style: maptilersdk.MapStyle.STREETS,
                
             center: [16.62662018, 49.2125578], // starting position [lng, lat]
             zoom: 10, // starting zoom
                
           });
       </script>
     </body>
     </html>
    ```
    
2.  Replace `YOUR_MAPTILER_API_KEY_HERE` with [your own API key](https://cloud.maptiler.com/account/keys/). Make sure to [secure the key](https://docs.maptiler.com/guides/credentials/api-key/#secure-key) before you publish it.
    
3.  The next is up to you. You can center your map wherever you desire (modifying the `starting position`) and set an appropriate zoom level (modifying the `starting zoom`) to match your users’ needs. Additionally, you can change the map’s look (by updating the `source URL`); choose from a range of visually appealing map styles from our extensive [MapTiler standard maps](https://cloud.maptiler.com/maps/), or create your own to truly differentiate your application.
    
4.  Modify the map options. Remove the center and zoom options and add the geolocate option.
    
    ```diff
    const map = new maptilersdk.Map({
       container: 'map', // container's id or the HTML element in which SDK will render the map
       style: maptilersdk.MapStyle.STREETS,
     - center: [16.62662018, 49.2125578], // starting position [lng, lat]
     - zoom: 10, // starting zoom
     + geolocate: maptilersdk.GeolocationType.COUNTRY
     });
    ```
    
5.  Now the map options should look like this.
    
    ```js
    const map = new maptilersdk.Map({
       container: 'map', // container's id or the HTML element in which SDK will render the map
       style: maptilersdk.MapStyle.STREETS,
       geolocate: maptilersdk.GeolocationType.COUNTRY
     });
    ```
    

### Complete source code

```html
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8" />
  <title>Center map based on visitor's country bounds</title>
  <meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" />
  <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's id or the HTML element to render the map
      style: maptilersdk.MapStyle.STREETS,
      geolocate: maptilersdk.GeolocationType.COUNTRY
    });
  </script>
</body>
</html>
```

## Learn more

The map view can also be adjusted to the visitor’s location. To do this, follow the [How to center map based on visitor’s location](../ip-center-map/) tutorial.

Check out the tutorials [How to display disputed borders based on visitor’s location](../ip-disputed-borders/), [How to change the map labels language based on visitor’s location](../ip-map-language/) and [How to display the cookies consent bar according to the visitor’s location](../ip-cookie-bar/).

Visit the [MapTiler Geolocation API](https://docs.maptiler.com/cloud/api/geolocation/) reference for Geolocation response object properties. Like for example, the name of the country, the city, etc.

## Related examples

### [Geolocate control (GPS)](https://docs.maptiler.com/sdk-js/examples/geolocate-control/)

Tutorials

Enable GPS location tracking using the geolocate map control.

### [Disputed borders by IP](https://docs.maptiler.com/sdk-js/examples/ip-disputed-borders/)

Tutorials

This tutorial shows how to automatically change disputed borders according to your map visitor's location usign the MapTiler Geolocation API.

### [Map language by IP](https://docs.maptiler.com/sdk-js/examples/ip-map-language/)

Tutorials

This tutorial shows how to automatically change the map labels language based on visitor's location usign the MapTiler Geolocation API.

### [Center map by IP](https://docs.maptiler.com/sdk-js/examples/ip-center-map/)

Tutorials

This tutorial shows how to center map based on the visitor's location using the MapTiler Geolocation API.