What is key information extraction (KIE)?

Key Information Extraction (KIE) extracts specific fields from documents into structured outputs, so teams can review, reuse, and export data reliably.

What it does

KIE turns unstructured documents into structured fields. Instead of reading every page manually, you define what you care about (for example: parties, dates, invoice numbers, totals) and extract those fields into consistent outputs.

How it works in practice

  • Define a schema: list the fields you want to extract and keep the schema reusable.
  • Run extraction: select a target document and apply the chosen schema.
  • Review results: validate values in JSON view or table view.
  • Export: save results as CSV for spreadsheets, databases, or downstream systems.

Why teams use KIE

  • Speed: extract key fields without scanning every paragraph.
  • Consistency: standardize outputs across documents with the same schema.
  • Auditability: review extracted fields in a compact format before exporting.
  • Automation-ready: CSV outputs are easy to integrate with other tools.

Common use cases

  • Invoices: vendor, invoice number, date, line items, totals.
  • Contracts: parties, effective dates, obligations, renewal clauses.
  • Forms: IDs, names, addresses, and other repeated fields.
  • Reports: key metrics, timestamps, and summary fields.

Try KIE in Ckraken

Ckraken provides a local-first extraction workflow with reusable schemas, JSON/table review, and CSV export. See the feature overview on the Key Info Extraction page.