---
title: QLThumbnailReply
framework: quicklookthumbnailing
role: symbol
role_heading: Class
path: quicklookthumbnailing/qlthumbnailreply
---

# QLThumbnailReply

The object that provides a thumbnail for a custom file type.

## Declaration

```swift
class QLThumbnailReply
```

## Mentioned in

Providing Thumbnails of Your Custom File Types

## Topics

### Creating a Thumbnail

- [init(contextSize:currentContextDrawing:)](quicklookthumbnailing/qlthumbnailreply/init(contextsize:currentcontextdrawing:).md)
- [init(contextSize:drawing:)](quicklookthumbnailing/qlthumbnailreply/init(contextsize:drawing:).md)
- [init(imageFileURL:)](quicklookthumbnailing/qlthumbnailreply/init(imagefileurl:).md)

### Customizing a Thumbnail Reply

- [extensionBadge](quicklookthumbnailing/qlthumbnailreply/extensionbadge.md)

### Initializers

- [init(contextSize:currentContextDrawingBlock:)](quicklookthumbnailing/qlthumbnailreply/init(contextsize:currentcontextdrawingblock:).md)
- [init(contextSize:drawingBlock:)](quicklookthumbnailing/qlthumbnailreply/init(contextsize:drawingblock:).md)

## Relationships

### Inherits From

- [NSObject](objectivec/nsobject-swift.class.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)

## See Also

### Thumbnails for Custom File Types

- [Providing Thumbnails of Your Custom File Types](quicklookthumbnailing/providing-thumbnails-of-your-custom-file-types.md)
- [QLThumbnailProvider](quicklookthumbnailing/qlthumbnailprovider.md)
- [QLFileThumbnailRequest](quicklookthumbnailing/qlfilethumbnailrequest.md)