Free viewer and validator for European e-invoices. Open XRechnung, ZUGFeRD / Factur-X, Peppol UBL and Polish KSeF files and read them like a normal invoice, save as PDF or extract the XML from a ZUGFeRD PDF. The validator checks the file against EN 16931, XRechnung and Peppol rules and explains each error. Everything runs in your browser: files are never uploaded, no account, no tracking cookies. In English, German and Polish.
