> 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/faq/webviewer-5.0-snippets.md).

# Where can I find code snippets for WebViewer 5.0 or earlier?

World's #1 PDF SDK Library for Web, Mobile, Server, Desktop

With the release of WebViewer 6.0, code snippets of all the guides have been updated to include only `v6.0+` and `v5.1+`. If you are still using WebViewer 5.0.x, you can use `v5.1+` snippets with a few tweaks.

The biggest difference between WebViewer 5.1 and 5.0 is how it is instantiated. The promisified instantiation isn't available in 5.0 so you need to listen to the `ready` event instead. Also, objects and namespaces such as `Annotations`, `Tools`, `CoreControls` aren't attached to the `instance` object in 5.0 so you need to grab them from the iframe window.

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

```js
// v5.1+
WebViewer({
  ...
}, document.getElementById('viewer'))
  .then(instance => {
    const {
      docViewer,
      annotManager,
      Tools,
      Annotations,
      CoreControls,
      PartRetrievers,
      Actions,
      PDFNet,
    } = instance;

    // call instance APIs here
  });
```

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

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

```js
// v5.0
const viewerElement = document.getElementById('viewer');
const viewer = new PDFTron.WebViewer({
  ...
}, viewerElement);

viewer.addEventListener('ready', () => {
  const instance = viewer.getInstance();
  
  const docViewer = instance.docViewer;
  const annotManager = docViewer.getAnnotationManager();
  const {
    Tools,
    Annotations,
    CoreControls,
    PartRetrievers,
    Actions,
    PDFNet,
  } = document.querySelector('iframe').contentWindow;
  
  // call instance APIs here
});
```

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


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