eunormia turns your invoice data into a ZUGFeRD/Factur-X PDF/A-3 to EN 16931 — and validates every result before it is delivered.
Pick where eunormia runs: as a hosted API we operate for you, or as a .NET package inside your own network. The engine, the checks and the result are the same on both paths.
Hosted — nothing to operate
Call eunormia over HTTPS from any language. We run the engine, the validators and the updates; you send invoice data plus a PDF, we run the conversion and the checks and send the result back.
When the data must not leave the building
The identical engine as a NuGet package, running inside your own .NET application. No call leaves your network — and the result is the one the API would have returned.
Outgoing invoices
From JSON or CII-XML plus your PDF, eunormia builds a ZUGFeRD/Factur-X PDF/A-3 that meets EN 16931.
Incoming invoices
Read incoming ZUGFeRD/Factur-X invoices into structured data and validate them against veraPDF, EN 16931 and — optionally — the official KoSIT (XRechnung) and French CTC rules.
Every output passes an automated validation gate — anything that would not pass is never delivered.
Invoice data and PDFs are processed only in memory and never stored. We keep just accounts and quotas.
Practical, technical notes on e-invoicing — formats, standards and what keeps changing.
22 July 2026
Germany’s B2B mandate, France’s reform, ViDA at EU level, fresh format versions — the rules shift every few months. A tour of what actually changed, and what it means for anyone issuing invoices.
10 July 2026
Four names, one goal — an invoice a machine can read without guessing. Here is the clearest possible map of how the European e-invoice standards relate, without the acronym soup.
26 May 2026
"2% within 10 days, otherwise net 30" is trivial on paper — and surprisingly easy to get wrong in a structured e-invoice. Here is how to encode an early-payment discount so it survives EN 16931 validation.
Right now the whole of eunormia — the full SDK and the online API, every validation, conversion and read — is free, with the complete validation gate and no compromises. Prices only start in 2027. Become a pilot partner and enjoy benefits beyond that too: in return you help shape the product with your feedback and as a reference.
Free, no payment details. Pilot partner places are limited; we reserve the right to select.