# Data Parsing & Generation

## File Parsing

These tasks parse a file and return structured data, or generate a file from structured data. They are typically placed immediately after a **File Upload Trigger**.

<figure><img src="/files/1XGssY21mhBfMIWxOjc4" alt=""><figcaption></figcaption></figure>

| Node              | Input                           | Output             |
| ----------------- | ------------------------------- | ------------------ |
| **XML Parser**    | XML string or uploaded file     | JSON object        |
| **XML Generator** | JSON object                     | XML string         |
| **CSV Parser**    | Uploaded CSV file               | JSON array of rows |
| **Excel Parser**  | Uploaded `.xlsx` / `.xlsm` file | JSON array of rows |

Connect them in the flow and they work automatically — no additional configuration is required for basic parsing.

{% hint style="info" %}
The CSV Parser, Excel Parser, and XML Parser tasks accept the file reference object produced by the File Upload Trigger as their input. See [Triggers & Execution](/tillit/knowledge-base/setting-up-tillit/integrations/wire-flow/triggers-and-execution.md) for the expected input format.
{% endhint %}

## Storing Results for Future Use

You can use the End Event Task type to create a variable and use the results in the further nodes. Otherwise, you can only map the immediate previous results.

<figure><img src="/files/fp8H1BEMEY3KPwYGOS87" alt=""><figcaption></figcaption></figure>


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