AI Invoice Reader with Human Review

An automation that turns invoices into structured spreadsheet rows. Send any invoice, PDF or photo, to a secure endpoint. The workflow detects the file type, reads text directly from digital PDFs, and falls back to OCR for scans and images. AI extracts the key fields: vendor, invoice number, date, and total. If anything looks incomplete or uncertain, a reviewer gets an email and approves or corrects it before the data is saved. Clean records are logged to Google Sheets automatically.

Built with: n8n, OCR.space, Google Gemini, Gmail, Google Sheets, webhook with header authentication, human-in-the-loop approval.