Automatic document classification: how does it work?

Dernière mise à jour :

June 16, 2025

5 minutes

Automatic classification is based on the analysis of the content of a document (text, layout, metadata) by artificial intelligence trained to recognize its type. In a few seconds, it can identify whether it is an invoice, a contract or a receipt, and automatically direct it to the right treatment.

Discover how automatic document classification works with AI OCR: steps, use cases and business gains.

Classification of documents

What is automatic document classification?

Automatic document classification is a technology based on artificial intelligence and machine learning that makes it possible to sort, organize, and categorize documents without human intervention. It relies on algorithms capable of analyzing the content of files to assign them a relevant classification.

This approach is particularly useful for businesses and administrations managing a large volume of digital documents. Thanks to tools like the OCR IA (optical character recognition coupled with artificial intelligence), it is becoming possible to process various formats (PDF, images, emails...) and to extract key information.

How does an automatic classification system work?

Step 1: Pre-processing documents

Before any classification, documents should be prepared. This step consists in cleaning the data, eliminating duplicates and converting the files into a format that can be used by the algorithm (plain text, structured metadata, etc.).

Step 2: Extracting characteristics (text, layout, metadata...)

The AI analyzes each document by identifying the distinctive elements:

  • The textual content or the handwriting via optical character recognition (OCR).
  • The layout and structure of the document.
  • Metadata (dates, authors, references...).

Step 3: AI machine learning or OCR models

Once the characteristics are extracted, they are used by machine learning models to recognize patterns and classify documents into predefined categories. AI OCR refines these results by identifying information that is specific to each document.

What types of documents can be automatically classified?

Automatic classification applies to a wide variety of business documents. Here are some concrete examples of use cases:

Supplier Invoices

Whether they come from large corporations or small businesses, invoices vary in format and layout. A classification system can automatically distinguish between EDF, Amazon Business, Orange invoices, or those from independent contractors, to trigger the correct validation workflows.

Contracts and Legal Documents

Service agreements, commercial leases, amendments, general terms and conditions... the system can identify their type (fixed-term, automatic renewal, etc.) and route them to the appropriate legal or HR department.

Identity Documents

National ID cards, passports, driver's licenses, residence permits... even if these documents come from different countries, the model can learn to recognize them accurately, for example as part of a KYC/KYB process.

Medical Records

Hospital discharge summaries, prescriptions, treatment forms, or lab results. In a healthcare setting, this enables documents to be segmented by procedure type or medical specialty.

Receipts and Supporting Documents

Expense reports, cash register receipts, proof of payment (bank details, account statements), shipping slips... These documents are automatically classified to support accounting or logistics workflows.

Internal Reports

Financial statements, monthly reports, audits, meeting minutes. The system recognizes their type, origin (department, author), and stores them in the appropriate location within the DMS.

What are the benefits of an automatic classification solution?

Automating document sorting brings several benefits:

  • Time saver : Reduction of repetitive tasks.
  • Accuracy improvement : Fewer human errors.
  • Securing data : Better access and storage management.
  • Optimizing business processes : Faster access to essential information.
Benefits

Concrete example of a classification process with Koncile

Koncile is an innovative solution using AI OCR to automate document sorting. Its system analyzes and classifies files in real time, facilitating their exploitation. For example, a company that processes hundreds of invoices per day can rely on Koncile to organize them by supplier, amount, or date of issue, without human intervention.

Classification process

Conclusion: when to deploy an intelligent classification solution?

The integration of an automatic classification solution is particularly relevant for organizations handling a large volume of documents and seeking to optimize their document management. Whether for reduce costs, improve Productivity or reinforce regulatory compliance, automation offers an undeniable competitive advantage.

Author and Co-Founder at Koncile
Tristan Thommen

Co-founder at Koncile – Turn any document into structured data with LLMs – tristan@koncile.ai

Tristan Thommen designs and deploys the core technologies that transform unstructured documents into actionable data. He combines AI, OCR, and business logic to make life easier for operational teams.