[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) › base64UrlToUint8Array

```ts
function base64UrlToUint8Array(value: string & Brand<"Base64Url">): Uint8Array;
```

Defined in: [packages/common/src/Type.ts:5805](https://github.com/evoluhq/evolu/blob/037c390af081e9944d616ff298a729515c5c5ab7/packages/common/src/Type.ts#L5805)

Converts [Base64Url](https://evolu.dev/docs/api-reference/common/Type/variables/Base64Url) to bytes.

### Example

```ts

const value = Base64Url.orThrow("AAEC_w");

assertEqual(base64UrlToUint8Array(value), new Uint8Array([0, 1, 2, 255]));
```