OpenInvoice review
A free, open-source extractor with review and exports, but limited AP workflow coverage.
Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
OpenInvoice is an open-source invoice data extraction application for organizations turning PDF, PNG, or JPG invoices into structured records. It is aimed at technical teams that want control over deployment through web, API, or self-hosted options. The product extracts supplier, client, invoice number, dates, totals, tax, currency, identifiers, and line items. It also supports CSV and JSON exports, making it suitable for teams that need extracted data for downstream processing rather than a complete accounts-payable suite.
Its standout capability is the cascading extraction pipeline. OpenInvoice combines regex extraction, invoice2data templates, and a MiniMax LLM fallback, then provides side-by-side review against the original document. Users can make inline corrections while retaining correction tracking. A dashboard covers invoice volume, success rates, supplier distribution, and LLM costs. Webhook invoice ingestion is available through the API, while documented connections include Microsoft Teams, Outlook or email, OneDrive or SharePoint, and the Webhook API. This combination suits teams that value configurable extraction and visibility into processing behavior.
OpenInvoice is a strong fit when invoice capture, review, correction, export, and monitoring are the main requirements. Its free and open-source model can also suit organizations that prefer self-hosted deployment or want to connect extraction to internal systems. It is less suitable for teams seeking a broader end-to-end AP workflow: verified purchase-order matching, approval routing, and duplicate detection are not covered. Those requirements call for an alternative with deeper process controls. OpenInvoice is therefore best considered an extraction layer with review and integration options, rather than a full invoice-processing suite.
OpenInvoice pros and cons
- Where it wins
- Free, open-source deployment across web, API, and self-hosted environments
- Extracts invoice fields and line items from PDF, PNG, and JPG files
- Review, corrections, exports, dashboards, and webhook ingestion are included
- Where it doesn't
- No verified purchase-order matching is included
- Approval routing is not covered for end-to-end AP workflows
- Duplicate invoice detection is not included
OpenInvoice fact sheet, pricing and score →
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