---
title: "Interface: IProofImage | Customer's Canvas On-Premises"
canonical: "https://customerscanvas.com/docs/on-premises/design-editor/iframe-api/reference/design-editor-iframe/interfaces/ObjectModel.IProofImage/"
---

# Interface: IProofImage

> A structure holding settings for proof images.

## Example

``` js
const emptyProduct = {
   surfaces: [{
      width: 720,
      height: 504,
      proofImage: {
          fileFormat: "PNG",
          rgbColorProfileName: "Adobe RGB (1998)",
          mockupEnabled: false
      }
   }]
};
```

## Properties

### fileFormat?

> `optional` **fileFormat?**: `string`

The type of preview files. It can be either `"JPEG"` or `"PNG"`. The default value is `"JPEG"`.

***

### safetyLinesEnabled?

> `optional` **safetyLinesEnabled?**: `boolean`

Allows for drawing safety lines on proof images. The default value is `true`.

***

### cropSafetyLineName?

> `optional` **cropSafetyLineName?**: `string`

The name of a safety line which proof images are cropped to; if there is no safety line with the given name, proof images are not cropped. The default value is an empty string.

***

### spineAndFoldingLinesEnabled?

> `optional` **spineAndFoldingLinesEnabled?**: `boolean`

Displays spines and folding lines on proof images. The default value is `true`.

***

### mockupEnabled?

> `optional` **mockupEnabled?**: `boolean`

Displays mockups on proof images. The default value is `true`.

***

### showStubContent?

> `optional` **showStubContent?**: `boolean`

Displays stub images and text hints in unfilled placeholders. The default value is `false`.

***

### flipMode?

> `optional` **flipMode?**: `string`

The flip mode of proof images. Allows for flipping proof images. Possible values are `"none"`, `"vertical"`, `"horizontal"`, and `"both"`. The default value is `"none"`.

***

### rotateMode?

> `optional` **rotateMode?**: `string`

The rotate mode of proof images. Allows for rotating proof images. Possible values are `"none"`, `"auto"`, `"rotate90"`, `"rotate180"`, and `"rotate270"`. The default value is `"none"`.

***

### interpolationMode?

> `optional` **interpolationMode?**: `string`

The interpolation algorithm used for resizing proof images. You can find the list of supported algorithms in the specification of the Aurigma Graphics Mill library. For example, you can use `"Lanczos"`, `"NearestNeighbour"`, and other algorithms. By default, no interpolation algorithms are applied to resize proof images.

***

### inStringPlaceholderHintsEnabled?

> `optional` **inStringPlaceholderHintsEnabled?**: `boolean`

If `true`, displays hints for unfilled in-string placeholders on proof images. The default value is `false`.