---
title: R2
description: Specify R2 Buckets to add to your environment as follows:
image: https://developers.cloudflare.com/dev-products-preview.png
---

> Documentation Index  
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# R2

* [R2 Reference](https://developers.cloudflare.com/r2/api/workers/workers-api-reference/)

## Buckets

Specify R2 Buckets to add to your environment as follows:

JavaScript

```
const mf = new Miniflare({  r2Buckets: ["BUCKET1", "BUCKET2"],});
```

## Manipulating Outside Workers

For testing, it can be useful to put/get data from R2 storage outside a worker. You can do this with the `getR2Bucket` method:

JavaScript

```
import { Miniflare } from "miniflare";
const mf = new Miniflare({  modules: true,  script: `  export default {    async fetch(request, env, ctx) {      const object = await env.BUCKET.get("count");      const value = parseInt(await object.text()) + 1;      await env.BUCKET.put("count", value.toString());      return new Response(value.toString());    }  }  `,  r2Buckets: ["BUCKET"],});
const bucket = await mf.getR2Bucket("BUCKET");await bucket.put("count", "1");
const res = await mf.dispatchFetch("http://localhost:8787/");console.log(await res.text()); // 2console.log(await (await bucket.get("count")).text()); // 2
```

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