[Home](./index.md) > [@firebase/storage](./storage.md) > [updateMetadata](./storage.updatemetadata.md) ## updateMetadata() function Updates the metadata for this object. Signature: ```typescript export declare function updateMetadata(ref: StorageReference, metadata: SettableMetadata): Promise; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | ref | [StorageReference](./storage.storagereference.md) | StorageReference to update metadata for. | | metadata | [SettableMetadata](./storage.settablemetadata.md) | The new metadata for the object. Only values that have been explicitly set will be changed. Explicitly setting a value to null will remove the metadata. | Returns: Promise<[FullMetadata](./storage.fullmetadata.md)> A promise that resolves with the new metadata for this object.