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# PHAssetExtendedMetadata

Represents other asset attributes that are not included when fetching `PHAsset` directly.

```
class PHAssetExtendedMetadata
```

## Overview

When [`extendedMetadata`](/documentation/Photos/PHAsset/extendedMetadata) is called, these properties are fetched. They can be
prefetched by toggling [`prefetchAssetExtendedMetadata`](/documentation/Photos/PHFetchOptions/prefetchAssetExtendedMetadata) when fetching [`PHAsset`](/documentation/Photos/PHAsset).

## Topics

### Reading metadata

[`caption`](/documentation/Photos/PHAssetExtendedMetadata/caption)

The compact description for this asset.

[`keywords`](/documentation/Photos/PHAssetExtendedMetadata/keywords)

The keywords associated with this asset

## Relationships

### Conforms To

[`CVarArg`](/documentation/Swift/CVarArg)

[`Hashable`](/documentation/Swift/Hashable)

[`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol)

[`CustomStringConvertible`](/documentation/Swift/CustomStringConvertible)

[`Equatable`](/documentation/Swift/Equatable)

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`Sendable`](/documentation/Swift/Sendable)

[`CustomDebugStringConvertible`](/documentation/Swift/CustomDebugStringConvertible)

### Inherits From

[`NSObject-swift.class`](/documentation/ObjectiveC/NSObject-swift.class)

---

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