---
title: "AI Document Processing developer guides"
canonical_url: "https://www.nutrient.io/guides/ai-document-processing/intro/"
md_url: "https://www.nutrient.io/guides/ai-document-processing/intro.md"
last_updated: "2026-06-09T10:27:40.450Z"
description: "Welcome to the AI Document Processing (formerly known as XtractFlow) developer guides. These guides show you how to add document recognition."
---

# Developer guides

Welcome to the AI Document Processing (formerly known as XtractFlow) developer guides. These guides show you how to add document recognition and classification, as well as data extraction functionality to your web, desktop, or mobile application.

If you’re brand new to Nutrient, have a look at our [get started guide](https://www.nutrient.io/sdk/ai-document-processing/getting-started.md).

## Guides

**[Concepts](https://www.nutrient.io/guides/ai-document-processing/concepts.md)**\
Learn about the building blocks for creating AI data classification and extraction workflows

**[Classify documents and extract data](https://www.nutrient.io/guides/ai-document-processing/classify-documents.md)**\
How to classify documents and extract data with AI

**[Invoice processing](https://www.nutrient.io/guides/ai-document-processing/invoices.md)**\
How to recognize documents as invoices and extract data from invoices with AI

**[Build a custom template](https://www.nutrient.io/guides/ai-document-processing/custom-templates.md)**\
How to build a custom AI data extraction template
---

## Related pages

- [Concepts](/guides/ai-document-processing/concepts.md)
- [Download AI Document Processing](/guides/ai-document-processing/downloads.md)
- [Document classification and data extraction](/guides/ai-document-processing/classify-documents.md)
- [AI Document Processing (formerly XtractFlow)](/guides/ai-document-processing.md)
- [Build a classification / extraction template](/guides/ai-document-processing/custom-templates.md)
- [Data extraction validators](/guides/ai-document-processing/preconfigured-validators.md)
- [Preconfigured classification and data extraction templates](/guides/ai-document-processing/preconfigured-templates.md)
- [Example: Invoice recognition and data extraction](/guides/ai-document-processing/invoices.md)