> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cognigy.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Basic Parser

The *Basic Parser* is a content parser that Knowledge AI uses to extract content from files more effectively. The Basic Parser splits the extracted content from a file into [Knowledge Chunks](/ai/agents/develop/knowledge-ai/knowledge-chunk/knowledge-chunk) based on a fixed token length during the creation of a [Knowledge Source](/ai/agents/develop/knowledge-ai/knowledge-source/overview). Based on our research, this parsing method works best with the **Top K** value set to 5 in the [Search Extract Output](/ai/agents/develop/node-reference/other-nodes/search-extract-output) Node.

## Supported Formats

| Cognigy.AI versions | Formats                  |
| ------------------- | ------------------------ |
| 4.79 or later       | PDF, DOCX, PPTX, and TXT |
| 4.78 and earlier    | PDF, DOCX, and TXT       |

## Availability

* Available in all installations.

## Set Up the Basic Parser

By default, Knowledge AI uses the [Advanced Parser](/ai/agents/develop/knowledge-ai/knowledge-source/text-extraction/advanced-parser) for text extraction. To activate the Basic Parser, select **Basic** from the **Content Parser** list in the **Document Processing** section in **Manage > Settings > Knowledge AI Settings**.

## More Information

* [Text Extraction with Content Parsers](/ai/agents/develop/knowledge-ai/knowledge-source/text-extraction/overview)
* [Text Extraction with the Advanced Parser](/ai/agents/develop/knowledge-ai/knowledge-source/text-extraction/advanced-parser)
* [Text Extraction with Azure AI Document Intelligence](/ai/agents/develop/knowledge-ai/knowledge-source/text-extraction/azure-ai)