---
title: kCGImagePropertyIPTCReferenceService
framework: imageio
role: symbol
role_heading: Global Variable
path: imageio/kcgimagepropertyiptcreferenceservice
---

# kCGImagePropertyIPTCReferenceService

The reference service.

## Declaration

```swift
let kCGImagePropertyIPTCReferenceService: CFString
```

## See Also

### Release Information

- [kCGImagePropertyIPTCReleaseDate](imageio/kcgimagepropertyiptcreleasedate.md)
- [kCGImagePropertyIPTCReleaseTime](imageio/kcgimagepropertyiptcreleasetime.md)
- [kCGImagePropertyIPTCExpirationDate](imageio/kcgimagepropertyiptcexpirationdate.md)
- [kCGImagePropertyIPTCExpirationTime](imageio/kcgimagepropertyiptcexpirationtime.md)
- [kCGImagePropertyIPTCSpecialInstructions](imageio/kcgimagepropertyiptcspecialinstructions.md)
- [kCGImagePropertyIPTCActionAdvised](imageio/kcgimagepropertyiptcactionadvised.md)
- [kCGImagePropertyIPTCReferenceDate](imageio/kcgimagepropertyiptcreferencedate.md)
- [kCGImagePropertyIPTCReferenceNumber](imageio/kcgimagepropertyiptcreferencenumber.md)
- [kCGImagePropertyIPTCDateCreated](imageio/kcgimagepropertyiptcdatecreated.md)
- [kCGImagePropertyIPTCTimeCreated](imageio/kcgimagepropertyiptctimecreated.md)
- [kCGImagePropertyIPTCDigitalCreationDate](imageio/kcgimagepropertyiptcdigitalcreationdate.md)
- [kCGImagePropertyIPTCDigitalCreationTime](imageio/kcgimagepropertyiptcdigitalcreationtime.md)