---
url: /process-functions/datasource-gzip.md
description: Compresses a file into a gzip file.
---

# datasource.gzip

Compresses a file into a gzip file. Gzip compresses one file only; use [datasource.zip](/process-functions/datasource-zip) to bundle several files together.

```js
datasource.gzip(fileName, outputFileName)
```

## Parameters

| Parameter | Type | Description |
|---|---|---|
| `fileName` | `string` | The path of the file to compress. |
| `outputFileName` | `string` | The path of the `.gz` file to create. |

## Returns

`true` when the file was compressed, otherwise `false`.

## Examples

```js
datasource.gzip("exports/actuals.csv", "exports/actuals.csv.gz");
```