---
sidebar_label: BrowserFetcher.download
---
# BrowserFetcher.download() method

Initiates a GET request to download the revision from the host.

**Signature:**

```typescript
class BrowserFetcher {download(revision: string, progressCallback?: (x: number, y: number) => void): Promise<BrowserFetcherRevisionInfo | undefined>;}
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  revision | string | The revision to download. |
|  progressCallback | (x: number, y: number) =&gt; void | <i>(Optional)</i> A function that will be called with two arguments: How many bytes have been downloaded and the total number of bytes of the download. |

**Returns:**

Promise&lt;[BrowserFetcherRevisionInfo](./puppeteer.browserfetcherrevisioninfo.md) \| undefined&gt;

A promise with revision information when the revision is downloaded and extracted.

## Remarks

This method is affected by the current `product`.