Klarfaktur

Open & validate European e-invoices

Free, in your browser, with the file never leaving your device.

Open a German e-invoice

Pick your country

Every country has its own flavour of the European standard. We build them one at a time, properly.

Processed on your device

Your invoice is read and validated inside the browser. Nothing is uploaded, nothing is stored, no account needed.

Checked against EN 16931

Mandatory fields, totals, VAT breakdown and the check digits of IBAN and routing identifiers – every finding explained in plain language.

Free, and staying free

No trial, no paywall, no feature that suddenly needs a plan. The viewer is funded by a single, clearly marked recommendation.