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# QLThumbnailGenerator.Request.RepresentationTypes

The various types of thumbnails that you can request.

```
struct RepresentationTypes
```

## Overview

Thumbnails come in one of three different types:

- [`icon`](/documentation/QuickLookThumbnailing/QLThumbnailGenerator/Request/RepresentationTypes-swift.struct/icon): A file icon representation.
- [`lowQualityThumbnail`](/documentation/QuickLookThumbnailing/QLThumbnailGenerator/Request/RepresentationTypes-swift.struct/lowQualityThumbnail): A faster to generate version of the thumbnail that may sacrifice quality for speed.
- [`thumbnail`](/documentation/QuickLookThumbnailing/QLThumbnailGenerator/Request/RepresentationTypes-swift.struct/thumbnail): A high-quality thumbnail.

To request all thumbnail representations, use [`all`](/documentation/QuickLookThumbnailing/QLThumbnailGenerator/Request/RepresentationTypes-swift.struct/all).

## Topics

### Creating a Thumbnail Type

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

Creates a new thumbnail type object for a given value.

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

The thumbnail type to generate all possible thumbnail representations.

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

A file icon representation of a file.

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

A faster to generate version of the thumbnail that may sacrifice quality for speed.

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

A thumbnail representation of a file.

## Relationships

### Conforms To

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

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

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

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

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

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

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

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

---

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