[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) › uint8ArrayToBase64Url

```ts
function uint8ArrayToBase64Url(bytes: Uint8Array): string & Brand<"Base64Url">;
```

Defined in: [packages/common/src/Type.ts:5777](https://github.com/evoluhq/evolu/blob/b6ade4b22d4be1758761a2712668e870d3e602c7/packages/common/src/Type.ts#L5777)

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

### Example

```ts

assertEqual(uint8ArrayToBase64Url(new Uint8Array([0, 1, 2, 255])), "AAEC_w");
```