> For the complete documentation index, see [llms.txt](https://docs.wisej.com/api/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.wisej.com/api/wisej.web/content/pdfviewer/wisej.web.pdfviewertype.md).

# PdfViewerType

Namespace: **Wisej.Web**

Assembly: **Wisej.Framework** (4.1.0.0)

Specifies the type of Pdf viewer to use in the [PdfViewer](https://docs.wisej.com/api/wisej.web/content/pdfviewer) control.

{% tabs %}
{% tab title="C#" %}

```csharp
public enum PdfViewerType : Enum
```

{% endtab %}

{% tab title="VB.NET" %}

```visual-basic
Public Enum PdfViewerType As [Enum]
```

{% endtab %}
{% endtabs %}

## Fields

| Name        | Description                                                                                                                                                                                                                 |
| ----------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Auto**    | The PDF viewer is selected by the client browser.                                                                                                                                                                           |
| **Custom**  | Use a custom viewer defined in the [ViewerURL](https://docs.wisej.com/api/wisej.web/content/pdfviewer#viewerurl) property. Use the \[source] placeholder in the URL to indicate where to insert the URL to the file source. |
| **Google**  | Use Google's document viewer. The URL of the Google viewer can be changed in the [ViewerURL](https://docs.wisej.com/api/wisej.web/content/pdfviewer#viewerurl) property.                                                    |
| **Mozilla** | Use Mozilla PDF.js viewer. The URL of the Mozilla viewer can be changed in the [ViewerURL](https://docs.wisej.com/api/wisej.web/content/pdfviewer#viewerurl) property.                                                      |

## Used By

| Name                                                                                      | Description                                                                                                                                  |
| ----------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------- |
| [PdfViewer.ViewerType](https://docs.wisej.com/api/wisej.web/content/pdfviewer#viewertype) | Returns or sets the [PdfViewerType](https://docs.wisej.com/api/wisej.web/content/pdfviewer/wisej.web.pdfviewertype.md) to use on the client. |


---

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```

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