INVOX

Check ZUGFeRD / Factur-X

Check ZUGFeRD / Factur-X (Hybrid PDF/A + XML) against EN16931 on the official German reference engine — free, no install, EU-hosted, zero-retention.

ZUGFeRD / Factur-X — Human-readable PDF with embedded EN16931 XML (from 2.1.1). (DE/FR)

FAQ

How do I check ZUGFeRD / Factur-X?

Upload or paste the file — INVOX checks ZUGFeRD / Factur-X against EN16931 on the official KoSIT reference engine and returns clear errors with fix hints plus a signed, offline-verifiable proof.

Is ZUGFeRD / Factur-X check free?

Yes — the free plan allows checks without a credit card. Metered tiers cover API access and higher volumes.

Do you store my ZUGFeRD / Factur-X data?

No. INVOX is zero-retention: invoice content is never persisted.

Related

ZUGFeRD / Factur-X validateZUGFeRD / Factur-X convertXRechnung checkFactur-X checkUBL checkUN/CEFACT CII check

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🔒 EU-hosted · zero-retention · official KoSIT reference engine