> For the complete documentation index, see [llms.txt](https://docs.wisej.com/docs/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/docs/controls/content/pdfviewer.md).

# PdfViewer

The `PdfViewer` control displays PDF documents in the browser. Multiple viewer types are available based on the browser type.

To get started, set the `PdfSource` property to the URL of a PDF document and it will be loaded at runtime.

{% hint style="info" %}
For a full list of properties, methods and events see the [API documentation.](http://docs.wisej.com/api)
{% endhint %}

## Features

### Multiple Viewer Types

The `PdfViewer` has several preset `PdfViewerTypes`:

* `Auto`: The PDF viewer is selected by the client browser.
* `Google`: Use Google's document viewer.
* `Mozilla`: Use Mozilla PDF.js viewer.

![PdfViewer control showing Mozilla, Google, and Auto viewer types](/files/-Mf-3VOI2S4Xguo0DWX4)

### Custom Viewer

The `PdfViewer` control can implement a custom PDF viewer by setting the `ViewerType` property to `Custom` and applying a `ViewerURL`.

The image below demonstrates an integration of Mozilla's [PDF.js](https://mozilla.github.io/pdf.js/).

![PdfViewer control demonstrating custom PDF.js viewer integration](/files/-Mf-5bo3qNa5tbgQBAI7)

## Advanced

### JavaScript Widget

| Item             | Description                                                                                                         |
| ---------------- | ------------------------------------------------------------------------------------------------------------------- |
| Class name       | "wisej.web.PdfViewer"                                                                                               |
| Theme appearance | "panel", see [Themes](https://docs.wisej.com/theme-builder/theme-elements/elements).                                |
| Child components | "pane" is the container for the PDF viewer. See [JavaScript](/docs/concepts/javascript-object-model.md).            |
| Source code      | [https://github.com/iceteagroup/wisej-js](https://github.com/iceteagroup/wisej-js/blob/master/wisej.web.TextBox.js) |


---

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