> For the complete documentation index, see [llms.txt](https://docs.onum.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.onum.com/pipelines/actions/transformation/field-transformation/field-transformation-operations/extraction/extract-urls.md).

# Extract URLs

## Description

This operation extracts URLs from a given input text, supporting HTTP, HTTPs, FTP and other protocols.

***

## Data types

These are the input/output expected data types for this operation:

### Input data

`String` - Input events to URLs from.

### Output data

`ListString` - List of comma-separated URLs.

***

## Parameters

These are the parameters you need to configure to use this operation (mandatory parameters are marked with a <mark style="color:red;">**\***</mark>):

<details>

<summary>Protocol Must Be Present</summary>

Choose **true** if you want to extract only URLs that start with a protocol (`http://`, `https://`, etc.). The default value is **false**.

</details>

***

## Example

Suppose you want to **extract** all the **URLs** from a given series of events. To do it:

1. In your Pipeline, open the required [Action](/pipelines/actions.md) configuration and select the input **Field**.
2. In the **Operation** field, choose **Extract URLs**.
3. Set **Protocol Must Be Present** to **false**.
4. Give your **Output field** a name and click **Save**.

For example, given this input text:

```
Check the latest sales figures at reports.example.com before tomorrow's call. The customer feedback survey (survey.fictional-company.net) closes Friday. Product documentation has moved to docs.nonexistent-tech.org
```

You'll get the following:

```
reports.example.com,survey.fictional-company.net,docs.nonexistent-tech.org
```

{% hint style="info" %}
You can try out operations with specific values using the **Input** field above the operation. You can enter the value in the example above and check the result in the **Output** field.
{% endhint %}