> For the complete documentation index, see [llms.txt](https://docs.apryse.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.apryse.com/web/get-started/samples/webviewer-jquery.md).

# Integrate WebViewer into a jQuery Content Delivery Network (CDN)

Using a Vanilla JavaScript app, WebViewer is instantiated in an app.js application. The component is able to view, annotate, and manipulate PDFs and other documents.

Using a Vanilla JavaScript app, WebViewer is instantiated in an `app.js` application. The component is able to view, annotate, and manipulate PDFs and other documents.

The sample also shows how to call methods from the `docViewer` and `annotManager` objects in the `instance`. As well as how to access other Apryse namespaces such as `Tools` and `Annotations`.

Additionally, it demonstrates how to programmatically set the Dark Theme in the viewer.

jQuery commands are then used in the sample to retrieve this JS app and deliver the content to a locally hosted server.

WebViewer provides a slick out-of-the-box responsive UI that enables you to view, annotate and manipulate PDFs and other document types inside any web project.

Once you generate your license key, it will automatically be included in your sample code below.

{% @apryse-license-key/apryse-license-key platform="WEB\_VIEWER" variant="compact" %}

Click the button below to view the full project in GitHub.

{% tabs %}
{% tab title="JavaScript" %}
{% code title="app.js" lineNumbers="true" %}

```js
/* eslint-disable-next-line no-undef */
WebViewer({
  path: 'lib', // path to the Apryse 'lib' folder on your server
  // licenseKey: 'Insert commercial license key here after purchase',
  initialDoc: 'https://pdftron.s3.amazonaws.com/downloads/pl/demo-annotated.pdf',
  // initialDoc: '/path/to/my/file.pdf',  // You can also use documents on your server
}, document.getElementById('viewer'))
  .then(function(instance) {
    const { documentViewer, annotationManager } = instance.Core;
    // call methods from instance, documentViewer and annotationManager as needed

    // you can also access major namespaces from the instance as follows:
    // const Tools = instance.Core.Tools;
    // const Annotations = instance.Core.Annotations;

    // change to dark theme
    const theme = instance.UI.Theme;
    instance.UI.setTheme(theme.DARK);

    documentViewer.addEventListener('documentLoaded', function() {
    // call methods relating to the loaded document
    });
  });
/*eslint no-unused-vars: "warn"*/
```

{% endcode %}
{% endtab %}
{% endtabs %}


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