> 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/open-save-document/open/arraybuffer.md).

# Open a document from ArrayBuffer

Efficiently open a document in WebViewer from ArrayBuffer using the blob format. The Apryse Web SDK streamlines secure, serverless document processing with robust support for JavaScript and TypeScript

## Opening a document from ArrayBuffer

If your document is already in [ArrayBuffer](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer/) format you can convert the ArrayBuffer object to a [Blob](https://developer.mozilla.org/en-US/docs/Web/API/Blob/) and then pass resulting Blob directly to loadDocument function.

{% tabs %}
{% tab title="JavaScript (SDK v8.0+)" %}
{% code lineNumbers="true" %}

```js
WebViewer(...)
  .then(instance => {

    // `arrayBuffer` is your buffer data which can come
    // from sources such as a server or the filesystem
    instance.UI.loadDocument(arrayBuffer, {
    // You need to specify either the file name of extension so
    // that WebViewer knows how to interpret the data
    filename: 'myfile.docx'
    
    // You can also change the InitialMode with WebViewer 11
    // initialMode: WebViewer.Modes.DOCX_EDITOR,
    });

    const { documentViewer } = instance.Core;
    documentViewer.addEventListener('documentLoaded', () => {
      // perform document operations
    });
  });
```

{% endcode %}

[UI.loadDocument](https://sdk.apryse.com/api/web/UI.html#loadDocument__anchor)
{% endtab %}

{% tab title="JavaScript (SDK v6.0+)" %}
{% code lineNumbers="true" %}

```js
WebViewer(...)
  .then(instance => {

    // `arrayBuffer` is your buffer data which can come
    // from sources such as a server or the filesystem
    const arr = new Uint8Array(arrayBuffer);
    const blob = new Blob([arr], { type: 'application/pdf' });
    instance.UI.loadDocument(blob, { filename: 'myfile.pdf' });

    const { docViewer } = instance.Core;
    docViewer.on('documentLoaded', () => {
      // perform document operations
    });
  });
```

{% endcode %}

[WebViewerInstance.loadDocument](https://sdk.apryse.com/api/web/UI.html#loadDocument__anchor)
{% endtab %}
{% endtabs %}

{% hint style="warning" %}
If you are loading from an array buffer, please ensure the [extension](/web/open-save-document/open.md#the-extension-option) or [filename](/web/open-save-document/open.md#the-filename-option) options are set while loading.
{% endhint %}

## Loading Options

WebViewer provides various options to load a document. Whether you are loading a document through the `initialDoc` option in the constructor or calling `loadDocument` after mounting, you can always provide [options to load your document](/web/open-save-document/open.md#loading-options).


---

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