---
layout: default-layout
needAutoGenerateSidebar: true
needGenerateH3Content: true
noTitleIndex: true
title: Dynamsoft Document Viewer API Reference - Interface IImageFilter
keywords: Documentation, Dynamsoft Document Viewer, API Reference, Interface IImageFilter
breadcrumbText: Interface IImageFilter
description: Dynamsoft Document Viewer Documentation API Reference Interface IImageFilter Page
permalink: /api/interface/iimagefilter.html
---


# IImageFilter

It is implemented by [`ImageFilter`](https://www.dynamsoft.com/document-viewer/docs/api/class/advanced/imagefilter.md) Class.

## Members

### querySupported()

**Syntax**

```typescript
querySupported(): ImageFilterItem[];
```

**Return Value**

Please refer to [`ImageFilterItem`](https://www.dynamsoft.com/document-viewer/docs/api/interface/imagefilteritem.md).

### `get` defaultFilterType()

**Syntax**

```typescript
get defaultFilterType(): EnumImageFilterType;
```

**Return Value**

Please refer to [`EnumImageFilterType`](https://www.dynamsoft.com/document-viewer/docs/api/enumeration-type/enumimagefiltertype.md).

### applyFilter()

**Syntax**

```typescript
applyFilter(image: VImageData, type: EnumImageFilterType): Promise<Blob>;
```

**Parameters**

`image`: The image which will be filtered. Please refer to [`VImageData`](https://www.dynamsoft.com/document-viewer/docs/api/interface/vimagedata.md).
`type`: The image filter type. Please refer to [`EnumImageFilterType`](https://www.dynamsoft.com/document-viewer/docs/api/enumeration-type/enumimagefiltertype.md).

**Return Value**

A Promise object which will be resolved with `Blob` of the filtered image.

### destroy()

**Syntax**

```typescript
destroy(): void;
```