What Is AI Data Extraction? A Visual Guide

AI term explained4 slidesn8n

By Robert Breen · Published October 1, 2026 · From the free lesson AI Receipt Extractor: Receipts to Google Sheets with n8n

A visual guide to AI data extraction: pulling the date, vendor and total out of a receipt photo and into Google Sheets, from a real n8n lesson.

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Swipe or scroll sideways for all 4 slides. The whole guide is written out below.

The guide in text

Data extraction: Pulling specific pieces of information, like a date, vendor name or total, out of receipts, emails, PDFs or photos and into fields a spreadsheet can use.

A photo in, a row out

The agent reads a Corner Mart receipt (a made-up store): April 24, $31.57. It picks Groceries itself, so check that field more carefully.

Trust it after you check it

Name the fields you want, and match them to your column headers exactly.
Compare the first several results with the original before trusting the workflow.
Watch for misread totals on faded receipts and for tax mistaken for the total.

The full definition: What is AI data extraction? in the AI glossary, with an example from a free lesson, common confusions and tips.

Businesses and people in the examples are made up. The steps, screens and wording come from the free lesson and the Stepthrough glossary and prompt library.

Do it yourself, free

AI Receipt Extractor: Receipts to Google Sheets with n8n. Drop a photo of a receipt into an n8n chat. An AI agent reads it, pulls out the date, vendor and amount, picks a category, and adds a row to Google Sheets. You do every step yourself in a practice copy of n8n, it checks your work as you go, and “Do it for me” finishes any step you get stuck on. Free, and nothing touches your real accounts.

Start the free lesson

Or read the full step-by-step guide

Plain-English definitions, each with an example from a free lesson.

Data extraction Audit trail Chat model Credential Expense categorization Field mapping Multimodal AI OCR (optical character recognition)

The full AI glossary

Receipt details extraction prompt: Pull date, vendor, tax, total and job from receipt photos into a table, with "Unreadable" instead of guesses and a check that…
Expense categorization prompt: Sort a batch of expenses into your own categories, with a short note each and a Needs Review bucket for anything unclear…
Expense report summary prompt: Summarize a month of expense or reimbursement rows for the owner: totals by category and status, what's waiting, and flags to…
Google Sheets columns plan prompt: Plan the Google Sheets columns for an n8n automation: header names, what goes in each, who fills it, and which must match your…

All free prompt templates

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