---
title: "init(fileAt:size:scale:representationTypes:)"
framework: quicklookthumbnailing
role: symbol
role_heading: Initializer
path: "quicklookthumbnailing/qlthumbnailgenerator/request/init(fileat:size:scale:representationtypes:)"
---

# init(fileAt:size:scale:representationTypes:)

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

## Declaration

```swift
init(fileAt url: URL, size: CGSize, scale: CGFloat, representationTypes: QLThumbnailGenerator.Request.RepresentationTypes)
```

## Parameters

- `url`: The URL of the file for which you want to create a thumbnail.
- `size`: The desired size of the thumbnails.
- `scale`: The scale of the thumbnails. This parameter usually represents the scale of the current screen. However, you can pass a screen scale to the initializer that isn’t the current device’s screen scale. For example, you can create thumbnails for different scales and upload them to a server in order to download them later on devices with a different screen scale.
- `representationTypes`: The different thumbnail types. For a list of all possible thumbnail representation types, see doc://com.apple.quicklookthumbnailing/documentation/QuickLookThumbnailing/QLThumbnailGenerator/Request/RepresentationTypes-swift.struct.

## Return Value

Return Value An initialized request object to create a thumbnail for a file.