---
title: "UnstructuredFileConverter"
id: unstructuredfileconverter
slug: "/unstructuredfileconverter"
description: "Use this component to convert text files and directories to a document."
---

# UnstructuredFileConverter

Use this component to convert text files and directories to a document.

<div className="key-value-table">

|                                        |                                                                                                |
| :------------------------------------- | :--------------------------------------------------------------------------------------------- |
| **Most common position in a pipeline** | Before [PreProcessors](../preprocessors.mdx)  or right at the beginning of an indexing pipeline |
| **Mandatory run variables**            | `paths`: A union of lists of paths                                                             |
| **Output variables**                   | `documents`: A list of documents                                                                |
| **API reference**                      | [Unstructured](/reference/integrations-unstructured)                                                  |
| **GitHub link**                        | https://github.com/deepset-ai/haystack-core-integrations/tree/main/integrations/unstructured |

</div>

## Overview

`UnstructuredFileConverter` converts files and directories into documents using the Unstructured API.

[Unstructured](https://docs.unstructured.io/) provides a series of tools to do ETL for LLMs. The `UnstructuredFileConverter` calls the Unstructured API that extracts text and other information from a vast range of file [formats](https://docs.unstructured.io/api-reference/api-services/overview#supported-file-types).

This Converter supports different modes for creating documents from the elements returned by Unstructured:

- `"one-doc-per-file"`: One Haystack document per file. All elements are concatenated into one text field.
- `"one-doc-per-page"`: One Haystack document per page. All elements on a page are concatenated into one text field.
- `"one-doc-per-element"`: One Haystack document per element. Each element is converted to a Haystack document.

## Usage

Install the Unstructured integration to use `UnstructuredFileConverter`component:

```shell
pip install unstructured-fileconverter-haystack
```

There are free and paid versions of Unstructured API: **Free Unstructured API** and **Unstructured Serverless API**.

1. **Free Unstructured API**:
   - API URL: `https://api.unstructured.io/general/v0/general`
   - This version is free, but comes with certain limitations.

2. **Unstructured Serverless API**:
   - You'll find your unique API URL in your Unstructured account after signing up for the paid version.
   - This is a full-tier paid version of Unstructured.

 For more details about the two tiers refer to Unstructured [FAQ](https://docs.unstructured.io/faq/faq).

:::note
❗The API keys for the free and paid versions are different and cannot be used interchangeably.

:::

Regardless of the chosen tier, we recommend to set the Unstructured API key as an environment variable `UNSTRUCTURED_API_KEY`:

```shell
export UNSTRUCTURED_API_KEY=your_api_key
```

### On its own

```python
import os
from haystack_integrations.components.converters.unstructured import (
    UnstructuredFileConverter,
)

converter = UnstructuredFileConverter()
documents = converter.run(paths=["a/file/path.pdf", "a/directory/path"])["documents"]
```

### In a pipeline

```python
import os
from haystack import Pipeline
from haystack.components.writers import DocumentWriter
from haystack.document_stores.in_memory import InMemoryDocumentStore
from haystack_integrations.components.converters.unstructured import (
    UnstructuredFileConverter,
)

document_store = InMemoryDocumentStore()

indexing = Pipeline()
indexing.add_component("converter", UnstructuredFileConverter())
indexing.add_component("writer", DocumentWriter(document_store))
indexing.connect("converter", "writer")

indexing.run({"converter": {"paths": ["a/file/path.pdf", "a/directory/path"]}})
```

### With Docker

To use `UnstructuredFileConverter` through Docker, first, set up an Unstructured Docker container:

```
docker run -p 8000:8000 -d --rm --name unstructured-api quay.io/unstructured-io/unstructured-api:latest --port 8000 --host 0.0.0.0
```

When initializing the component, specify the localhost URL:

```python
from haystack_integrations.components.converters.unstructured import (
    UnstructuredFileConverter,
)

converter = UnstructuredFileConverter(
    api_url="http://localhost:8000/general/v0/general",
)
```
