Check XML on your device

Full XRechnung validation with an offline CLI. Files never leave your device.

€199 once · offline npm package · 365 days of downloads

Browser preflight is free. Paid checkout is paused while commercial and tax setup is completed.

Open a file. Keep it local.

Free browser preflight checks XML syntax, UBL/CII root and BuyerReference only. It does not establish XRechnung compliance. Use the offline CLI for all schema and Schematron rules.

No file selected. No upload.

The full validator, offline

€199 once: offline npm package with full KoSIT schema and Schematron checks, pinned rules and licences. 365 days of downloads and tested updates when released; no automatic renewal. The downloaded version continues working without activation or document quotas. Requires Node 20+ and Java 21+ installed separately on Windows, macOS or Linux.

npm install --global --offline --no-audit --no-fund ./invoice-bridge-offline-2.0.0.tgz
invoice-bridge ./invoice.xml > report.json

XRechnung 3.0.2 · UBL/CII · KoSIT 1.6.3 · configuration 2026-08-31. Maximum 60,000 UTF-8 bytes. No Factur-X/ZUGFeRD PDF, Peppol, certification, tax advice or guarantee of recipient acceptance.

No account or internet connection during CLI validation. No automatic rule downloads. Remote API/MCP validation is disabled; no remote fallback is called.

Download your offline package

Already purchased? Enter the key delivered after payment. Only your key is sent, never an invoice. Full refund within 14 days via support.