Postscale Check · free
XRechnung validator
Paste or choose an XML invoice to detect XRechnung UBL/CII format and run EN 16931/XRechnung preflight validation.
Validation scope
This tool runs Postscale's built-in XML invoice checks: format detection, XML well-formedness, required EN 16931 business terms, and XRechnung-specific required fields such as buyer reference.
ZUGFeRD and Factur-X PDFs can be processed through the Postscale Invoices API, but this free browser flow accepts XML only.
Need this in production?
The free tool is great for one-off checks. For automated monitoring, alerting, and an API, see the related Postscale product.
See the XRechnung API