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Invoice Processor & Validator with OCR, AI & Google Sheets

by Dhrumil Patelβ€’Updated: Last update 4 months agoβ€’Source: n8n.io
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Getting Started

πŸ“ Say goodbye to manual invoice checking!

This smart workflow automates your entire invoice processing pipeline using AI , OCR , and Google Sheets.


βš™οΈ What This Workflow Does:

πŸ“₯ 1. Reads an invoice PDF
β€” Select a local PDF invoice from your machine.

πŸ” 2. Extracts raw text using OCR
β€” Converts scanned or digital PDFs into readable text.

🧠 3. AI Agent processes the text
β€” Transforms messy raw text into clean JSON using natural language understanding.

🧱 4. Structures and refines the JSON
β€” Converts AI output into a structured, usable format.

πŸ”„ 5. Splits item-wise data
β€” Extracts individual invoice line items with all details.

πŸ†” 6. Generates unique keys
β€” Creates a unique identifier for each item for tracking.

πŸ“Š 7. Updates Google Sheet
β€” Adds extracted items to your designated sheet automatically.

πŸ“‚ 8. Fetches master item data
β€” Loads your internal product master to validate against.

βœ… 9. Validates item name & cost
β€” Compares extracted items with your official records to verify accuracy.

πŸ“Œ 10. Updates results per item
β€” Marks each item as Valid or Invalid in the sheet based on matching.


πŸ’Ό Use Case:

Perfect for businesses, freelancers, or operations teams who receive invoices and want to automate validation , detect billing errors , and log everything seamlessly in Google Sheets β€” all using the power of AI + n8n.

πŸ” Fast. Accurate. Zero manual work.


#OCR #AI #Invoices #Automation.