Automated Invoice Classification and Sorting Workflow

This n8n workflow automates the process of downloading, extracting, analyzing, and categorizing invoice files stored in Google Drive. Triggered manually, it begins by searching for invoice files within a specific Google Drive folder, then sequentially downloads and extracts text from PDF invoices. Using an AI-powered classifier integrated with Azure OpenAI’s GPT-4, the workflow analyzes the invoice content to determine its industry category: Retail, Manufacturing, or EdTech. Based on the classification, each invoice file is automatically moved to its respective categorized folder in Google Drive. This workflow is ideal for businesses managing large volumes of invoices, enabling streamlined organization, reducing manual effort, and improving invoice processing efficiency.