---
title: CGImageMetadataCreateMutable()
framework: imageio
role: symbol
role_heading: Function
path: imageio/cgimagemetadatacreatemutable()
---

# CGImageMetadataCreateMutable()

Creates an empty, mutable image metdata opaque type.

## Declaration

```swift
func CGImageMetadataCreateMutable() -> CGMutableImageMetadata
```

## Return Value

Return Value A CGMutableImageMetadata object that contains no metadata information, or NULL if an error occurs. You are responsible for releasing the returned object.

## See Also

### Creating a Mutable Metadata Type

- [CGImageMetadataCreateMutableCopy(_:)](imageio/cgimagemetadatacreatemutablecopy(_:).md)