纯本地私密运行的 Universal E-Invoice Viewer & Validator (XRechnung, Factur-X, Peppol, FatturaPA, KSeF)

Inspect, validate, and convert electronic invoices across XRechnung, Factur-X/ZUGFeRD, Peppol BIS, UBL, CII, FatturaPA, Facturae, KSeF, OIOUBL, EHF, and JP PINT with EN 16931 compliance checks. 100% 浏览器本地处理，无需注册账号，零服务器上传。