> ## Documentation Index
> Fetch the complete documentation index at: https://chart-spec.enchor.us/llms.txt
> Use this file to discover all available pages before exploring further.

# byteSourceFromBlob()

```ts theme={null}
function byteSourceFromBlob(blob): ByteSource;
```

A byte source over a `Blob`, which includes a browser `File` and the result of Node's `fs.openAsBlob`.

## Parameters

| Parameter | Type |
| - | - |
| `blob` | `Blob` |

## Returns

[`ByteSource`](https://chart-spec.enchor.us/scan-chart/api/index/interfaces/ByteSource)


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