Field notes for safer invoice work

E-invoice privacy, without the hand-waving.

Concrete workflows for support teams and developers working with structured invoice XML. Every guide leads to a browser-local tool you can use immediately.

Free browser tool

IBAN anonymizer with valid MOD-97

Replace an existing IBAN while preserving its country, length, character shape and checksum.

Outil gratuit · Français

Anonymiser SIREN, SIRET et TVA

Créer un identifiant de test français avec une clé de contrôle recalculée, sans envoi serveur.

Format guide

Peppol & UBL invoice anonymizer

Which identifiers sit inside a Peppol BIS Billing XML, and how to replace them locally.

Format guide

CII invoice anonymizer

Prepare a CrossIndustryInvoice test copy without exposing seller or buyer data.

6 min guide

How to anonymize XRechnung

A practical field-by-field workflow for German electronic invoice XML.

Test-data guide

Create realistic e-invoice test data

Keep the useful XML structure while removing production identifiers.

Decision guide

Synthetic or anonymized test data?

Choose the smallest safe fixture that can still reproduce the invoice bug.

Privacy guide

Share an invoice with AI safely

Minimize invoice data before using an AI assistant for debugging or explanation.