純本機私密執行的 UBL ↔ UN/CEFACT CII Invoice Converter

Convert electronic invoices bidirectionally between OASIS UBL 2.1 (Peppol BIS Billing 3.0) and UN/CEFACT CII (ZUGFeRD / Factur-X / XRechnung) with 100% EN 16931 compliance 100% locally. 100% 瀏覽器本機處理，無需註冊帳號，零伺服器上傳。