voluptasmollitia/docs-exp/storage.uploadmetadata.md

Monorepo for the Firebase JavaScript SDK

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[Home](./index.md) &gt; [@firebase/storage](./storage.md) &gt; [UploadMetadata](./storage.uploadmetadata.md)

## UploadMetadata interface

Object metadata that can be set at upload.

<b>Signature:</b>

```typescript
export interface UploadMetadata extends SettableMetadata 
```
<b>Extends:</b> [SettableMetadata](./storage.settablemetadata.md)

## Properties

|  Property | Type | Description |
|  --- | --- | --- |
|  [md5Hash?](./storage.uploadmetadata.md5hash.md) | string \| undefined | <i>(Optional)</i> A Base64-encoded MD5 hash of the object being uploaded. |