[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [Type](https://evolu.dev/docs/api-reference/common/Type) › base64ToUint8Array

```ts
function base64ToUint8Array(value: string & Brand<"Base64">): Uint8Array;
```

Defined in: [packages/common/src/Type.ts:8859](https://github.com/evoluhq/evolu/blob/bc4578a260dd15d5bbf94b83765ca05984d194cb/packages/common/src/Type.ts#L8859)

Converts [Base64](https://evolu.dev/docs/api-reference/common/Type/variables/Base64) to bytes.

### Example

```ts
import { assertEqual, Base64, base64ToUint8Array } from "@evolu/common";

const value = Base64.orThrow("AAEC/w==");

assertEqual(base64ToUint8Array(value), new Uint8Array([0, 1, 2, 255]));
```