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# QLThumbnailGenerator.Request

A request to generate a thumbnail for a file.

```
class Request
```

## Topics

### Creating a Thumbail Request

[`-  initWithFileAtURL:size:scale:representationTypes:`](/documentation/QuickLookThumbnailing/QLThumbnailGenerator/Request/init(fileAt:size:scale:representationTypes:))

Creates a new request for a thumbnail with the specified parameters for a file at a provided URL.

### Describing the Requested Thumbnail

[`size`](/documentation/QuickLookThumbnailing/QLThumbnailGenerator/Request/size)

The size of the thumbnails.

[`scale`](/documentation/QuickLookThumbnailing/QLThumbnailGenerator/Request/scale)

The pixel density of the display on the intended device.

[`contentType`](/documentation/QuickLookThumbnailing/QLThumbnailGenerator/Request/contentType)

The content type of the source data for the thumbnail request.

[`representationTypes`](/documentation/QuickLookThumbnailing/QLThumbnailGenerator/Request/representationTypes-swift.property)

The thumbnail sizes that you provide for a thumbnail request.

[`minimumDimension`](/documentation/QuickLookThumbnailing/QLThumbnailGenerator/Request/minimumDimension)

The minimum height or width for a generated thumbnail.

[`iconMode`](/documentation/QuickLookThumbnailing/QLThumbnailGenerator/Request/iconMode)

A Boolean value indicating whether the generated thumbnail request should include icon decorations.

[`RepresentationTypes`](/documentation/QuickLookThumbnailing/QLThumbnailGenerator/Request/RepresentationTypes-swift.struct)

The various types of thumbnails that you can request.

## Relationships

### Conforms To

[`Equatable`](/documentation/Swift/Equatable)

[`CustomDebugStringConvertible`](/documentation/Swift/CustomDebugStringConvertible)

[`CVarArg`](/documentation/Swift/CVarArg)

[`Hashable`](/documentation/Swift/Hashable)

[`NSSecureCoding`](/documentation/Foundation/NSSecureCoding)

[`NSCoding`](/documentation/Foundation/NSCoding)

[`CustomStringConvertible`](/documentation/Swift/CustomStringConvertible)

[`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol)

[`NSCopying`](/documentation/Foundation/NSCopying)

### Inherits From

[`NSObject-swift.class`](/documentation/ObjectiveC/NSObject-swift.class)

---

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