01
The Problem
Teams spend hours on manual data entry from invoices and receipts, and typos creep into the books.
Case Study 04 · Document & Data Processing
Invoice & Receipt Extraction Pipeline
Turns invoices, receipts and PDFs into clean records with zero manual entry.
- n8n
- Gemini Vision
- Google Sheets API
- Automation
02
The Solution
A pipeline that watches an inbox or Drive folder, uses a vision LLM to pull structured fields (vendor, amount, date, line items) from each document and writes clean rows into Google Sheets, with a review step for anything it isn't sure about.
- Ingests invoices, receipts and PDFs from email or Drive
- Vision LLM extraction of vendor, amount, date and line items
- Writes validated rows to Google Sheets
- Routes low-confidence extractions to a quick human review
03
The Result
Manual data entry is replaced with review-by-exception: people only touch the few documents the system flags.
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