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Libraries | Maps JavaScript API

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To load the JavaScript code for the Maps JavaScript API, you include a bootstrap loader script on your page, of the following form:

<script>
  (g=>{var h,a,k,p="The Google Maps JavaScript API",c="google",l="importLibrary",q="__ib__",m=document,b=window;b=b[c]||(b[c]={});var d=b.maps||(b.maps={}),r=new Set,e=new URLSearchParams,u=()=>h||(h=new Promise(async(f,n)=>{await (a=m.createElement("script"));e.set("libraries",[...r]+"");for(k in g)e.set(k.replace(/[A-Z]/g,t=>"_"+t[0].toLowerCase()),g[k]);e.set("callback",c+".maps."+q);a.src=`https://maps.${c}apis.com/maps/api/js?`+e;d[q]=f;a.onerror=()=>h=n(Error(p+" could not load."));a.nonce=m.querySelector("script[nonce]")?.nonce||"";m.head.append(a)}));d[l]?console.warn(p+" only loads once. Ignoring:",g):d[l]=(f,...n)=>r.add(f)&&u().then(()=>d[l](f,...n))})({
    key: "YOUR_API_KEY",
    v: "weekly",
    // Use the 'v' parameter to indicate the version to use (weekly, beta, alpha, etc.).
    // Add other bootstrap parameters as needed, using camel case.
  });
</script>

The Maps JavaScript API is made up of libraries that are not loaded until you specifically request them. Breaking up components into libraries allows the API to load (and parse) quickly. You only incur the additional overhead of loading and parsing libraries as you need them.

Load additional libraries at runtime, by using the await operator to call importLibrary() from within an async function. For example:

const { Map } = await google.maps.importLibrary("maps");

The following code example shows loading both the Map and AdvancedMarkerElement libraries:

TypeScript 
// Initialize and add the map
let map;
async function initMap(): Promise<void> {
  // The location of Uluru
  const position = { lat: -25.344, lng: 131.031 };

  // Request needed libraries.
  //@ts-ignore
  const { Map } = await google.maps.importLibrary("maps") as google.maps.MapsLibrary;
  const { AdvancedMarkerElement } = await google.maps.importLibrary("marker") as google.maps.MarkerLibrary;

  // The map, centered at Uluru
  map = new Map(
    document.getElementById('map') as HTMLElement,
    {
      zoom: 4,
      center: position,
      mapId: 'DEMO_MAP_ID',
    }
  );

  // The marker, positioned at Uluru
  const marker = new AdvancedMarkerElement({
    map: map,
    position: position,
    title: 'Uluru'
  });
}

initMap();
Note: Read the guide on using TypeScript and Google Maps. JavaScript 
// Initialize and add the map
let map;

async function initMap() {
  // The location of Uluru
  const position = { lat: -25.344, lng: 131.031 };
  // Request needed libraries.
  //@ts-ignore
  const { Map } = await google.maps.importLibrary("maps");
  const { AdvancedMarkerElement } = await google.maps.importLibrary("marker");

  // The map, centered at Uluru
  map = new Map(document.getElementById("map"), {
    zoom: 4,
    center: position,
    mapId: "DEMO_MAP_ID",
  });

  // The marker, positioned at Uluru
  const marker = new AdvancedMarkerElement({
    map: map,
    position: position,
    title: "Uluru",
  });
}

initMap();
Available Libraries

The following libraries are available for use with dynamic library import and direct script loading tag:

The following bootstrap request illustrates how to add a request for the google.maps.geometry library of the Maps JavaScript API, to the direct script loading tag:

<script async
    src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&loading=async&libraries=geometry&callback=initMap">
</script>

To request multiple libraries, separate them with a comma:

<script async
    src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&loading=async&libraries=geometry,places&callback=initMap">
</script>

Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.

Last updated 2025-07-02 UTC.

[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-07-02 UTC."],[[["The Maps JavaScript API loads quickly by using libraries that are imported as needed with `google.maps.importLibrary()`."],["You can include your API key and specify the API version in a bootstrap loader script to initially load the API."],["Dynamic Library Import offers a modular approach, letting you load specific libraries like `maps`, `places`, `marker`, etc., on demand."],["For backward compatibility, a legacy bootstrap script tag is also available, supporting libraries such as `drawing`, `geometry`, and `places`."],["Both methods allow customization: Dynamic Import uses `importLibrary()` within an async function, while the legacy method uses the `libraries` parameter in the script tag's URL."]]],[]]

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