---
title: "QLThumbnailRequestSetThumbnailWithURLRepresentation(_:_:_:_:_:)"
framework: quicklook
role: symbol
role_heading: Function
path: "quicklook/qlthumbnailrequestsetthumbnailwithurlrepresentation(_:_:_:_:_:)"
---

# QLThumbnailRequestSetThumbnailWithURLRepresentation(_:_:_:_:_:)

Sets the default image representation for an item of a given type at the specified URL.

## Declaration

```swift
func QLThumbnailRequestSetThumbnailWithURLRepresentation(_ thumbnail: QLThumbnailRequest!, _ url: CFURL!, _ contentTypeUTI: CFString!, _ previewProperties: CFDictionary!, _ properties: CFDictionary!)
```

## Parameters

- `thumbnail`: The thumbnail request object.
- `url`: The url to the file of the preview response.
- `contentTypeUTI`: The UTI of the content for the preview representation.
- `previewProperties`: Additional properties for the preview response.
- `properties`: A dictionary of properties for the thumbnail. macOS doesn’t support any properties.

## See Also

### Handling thumbnail requests

- [QLThumbnailRequestCopyContentUTI(_:)](quicklook/qlthumbnailrequestcopycontentuti(_:).md)
- [QLThumbnailRequestCopyOptions(_:)](quicklook/qlthumbnailrequestcopyoptions(_:).md)
- [QLThumbnailRequestCopyURL(_:)](quicklook/qlthumbnailrequestcopyurl(_:).md)
- [QLThumbnailRequestCreateContext(_:_:_:_:)](quicklook/qlthumbnailrequestcreatecontext(_:_:_:_:).md)
- [QLThumbnailRequestFlushContext(_:_:)](quicklook/qlthumbnailrequestflushcontext(_:_:).md)
- [QLThumbnailRequestGetDocumentObject(_:)](quicklook/qlthumbnailrequestgetdocumentobject(_:).md)
- [QLThumbnailRequestGetGeneratorBundle(_:)](quicklook/qlthumbnailrequestgetgeneratorbundle(_:).md)
- [QLThumbnailRequestGetMaximumSize(_:)](quicklook/qlthumbnailrequestgetmaximumsize(_:).md)
- [QLThumbnailRequestGetTypeID()](quicklook/qlthumbnailrequestgettypeid().md)
- [QLThumbnailRequestIsCancelled(_:)](quicklook/qlthumbnailrequestiscancelled(_:).md)
- [QLThumbnailRequestSetDocumentObject(_:_:_:)](quicklook/qlthumbnailrequestsetdocumentobject(_:_:_:).md)
- [QLThumbnailRequestSetImage(_:_:_:)](quicklook/qlthumbnailrequestsetimage(_:_:_:).md)
- [QLThumbnailRequestSetImageAtURL(_:_:_:)](quicklook/qlthumbnailrequestsetimageaturl(_:_:_:).md)
- [QLThumbnailRequestSetImageWithData(_:_:_:)](quicklook/qlthumbnailrequestsetimagewithdata(_:_:_:).md)
- [QLThumbnailRequestSetThumbnailWithDataRepresentation(_:_:_:_:_:)](quicklook/qlthumbnailrequestsetthumbnailwithdatarepresentation(_:_:_:_:_:).md)