> 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/blob.md).

# Open and Load Blob Format Documents Using JavaScript

Easily open blob format documents in WebViewer. The Apryse Web SDK streamlines secure, serverless document processing with robust support for JavaScript and TypeScript, and seamlessly integrates with

## Opening a document in WebViewer from Blob

If your document is already in [Blob](https://developer.mozilla.org/en-US/docs/Web/API/Blob/) format you can pass the Blob object directly to loadDocument function.

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

```js
WebViewer(...)
  .then(instance => {
    // `myBlob` is your blob data which can come
    // from sources such as a server or the filesystem
    instance.UI.loadDocument(myBlob, { filename: 'myfile.pdf' });

    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 => {
    // `myBlob` is your blob data which can come
    // from sources such as a server or the filesystem
    instance.loadDocument(myBlob, { filename: 'myfile.pdf' });

    const { docViewer } = instance;
    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 a blob, 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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