---
title: "au-widget-design-editor/Commands/set-viewer-settings | Customer's Canvas On-Premises"
canonical: "https://customerscanvas.com/docs/on-premises/ui-framework/widgets/reference/au-widget-design-editor.Commands.set-viewer-settings/"
---

# au-widget-design-editor/Commands/set-viewer-settings

> A command that defines the canvas zoom.

## Classes

### SetViewerSettings

For details, you can refer to the `IDesignEditorDefinitionSetViewerSettings`.
```json
{
  "type": "design-editor", 
  "name": "editor",
  "params": {
    "initial": { ... }, 
    "setViewerSettings": {
      "zoom": 0.1,
      "zoomMode": 'bestFit',
      "scrollPosition": {x: 0, y: 0}
    }
  }
}
```

#### Extends

- [`DesignEditorWidgetCommand`](https://customerscanvas.com/docs/on-premises/ui-framework/widgets/reference/au-widget-design-editor.Commands.command.md#abstract-designeditorwidgetcommand)

#### Methods

##### execute()

```ts
execute(params): Promise<void>;
```

Executes this command.

###### Parameters

| Parameter | Type | Description |
| ------ | ------ | ------ |
| `params` | [`IDesignEditorDefinitionSetViewerSettings`](https://customerscanvas.com/docs/on-premises/ui-framework/widgets/reference/au-widget-design-editor.IAuWidgetDesignEditor.md#idesigneditordefinitionsetviewersettings) | Parameters for the command. |

###### Returns

`Promise`\<`void`\>

###### Overrides

[`DesignEditorWidgetCommand`](https://customerscanvas.com/docs/on-premises/ui-framework/widgets/reference/au-widget-design-editor.Commands.command.md#abstract-designeditorwidgetcommand).[`execute`](https://customerscanvas.com/docs/on-premises/ui-framework/widgets/reference/au-widget-design-editor.Commands.command.md#execute)