Tired of manually copying data from invoices and PDFs? 😫 We're revealing a production-ready n8n blueprint that automatically "reads" documents, extracts key data, and logs it perfectly in Google Sheets while you grab coffee.

We’ll talk about:

• A complete, step-by-step guide to building an automated document processing system for invoices, receipts, and contracts using n8n.
• The dual-engine processing approach: using the Tesseract.js node for free local OCR on images and the LlamaParse API for complex PDFs.
• How to use a powerful AI model like GPT-4o with a defined schema to accurately extract structured data like invoice numbers, totals, and vendor names.
• A robust, fault-tolerant system for automatically organizing your files in Google Drive, moving them from "unprocessed" to "processed" folders.
• The "bonus" workflow that takes your extracted data and uses another AI agent to generate comprehensive financial summary reports in Google Docs.
• Plus, a full setup guide, performance analysis, and cost breakdown showing how this system can run for as little as $10-$70/month.

Keywords: n8n, Document AI, AI Automation, Data Entry Automation, Tesseract.js, LlamaParse, OCR, PDF Parsing, GPT-4o, Google Drive Automation, Google Sheets, No-Code AI

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