Chat with PowerPoint Files Using LangGraph and GPT-4o

In this blog, I’ll guide you through creating a Python script that enables seamless conversation with your PowerPoint document (.PPTX). With this, you’ll be able to:

• Chat with PowerPoint and get instant answers.
• Understands document content and context.
• Answers questions about your documents and search for key information across document.
• Receive page number references for every answer.

Let’s get started.

To integrate PowerPoint documents with an LLM, we’ll leverage the capabilities of LangGraph and GPT-4o. To facilitate this integration, we’ll employ a four-step conversion process:

• Convert PPTX documents to PDF format with LibreOffice.
• Render PDF files as JPG images.
• Feed the images into the GPT-4o with vision capabilities and convert the result to in JSON structure.
• Store in the FAISS vector store.

End-to-end Conversion Process

See my previous blog on chatting with PDF documents for the foundational concept, which we’ll now apply to PowerPoint files.