---
url: https://docs.laravel-excel.com/csv/1.0/exports/configuration.md
---
# Configuration options

\[\[toc]]

## CSV export format

If you need a bit more control over the CSV format, you can customize the
*delimiter*, *enclosure* and *line ending* through the config file:

```php
<?php

return [
    'exports' => [
        'delimiter'   => ',',
        'enclosure'   => '"',
        'line_ending' => "\n",
    ],
];
```

The default values match the default values used by League/Csv.

**NB:** The *delimiter* and *enclosure* both must be exactly one character in length.

## Query chunk size

You can also customize the chunk size, which impacts performance for FromQuery concerns, as follows:

```php
<?php

return [
    'exports' => [
        'chunk_size' => 10000,
    ],
];
```

::: warning
You might need to find the sweet spot for your application, however we've experienced chunks bigger than 20000 to become slower.
:::