---
title: formatIdentifier
framework: photos
role: symbol
role_heading: Instance Property
path: photos/phadjustmentdata/formatidentifier
---

# formatIdentifier

A string uniquely identifying the format of the adjustment data.

## Declaration

```swift
var formatIdentifier: String { get }
```

## Discussion

Discussion Set this identifier when you create an adjustment object with the init(formatIdentifier:formatVersion:data:) method. For best results, identify your organization or product using a reverse-DNS-style name, such as com.example.myApp. Read this property, and the formatVersion property, to determine whether the adjustment data saved with an asset was created by your app or is otherwise compatible with your app.

## See Also

### Identifying the Format of an Adjustment’s Data

- [formatVersion](photos/phadjustmentdata/formatversion.md)