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E-Invoicing

Converter

Turn existing PDF invoices into ZUGFeRD or XRechnung: recognition, validation and output in the Billance converter.

2 min readDesktopMobileLast updated on September 6, 2026

Instructions for the Billance desktop app on Windows, macOS and Linux.

The converter turns existing invoice documents into reusable invoice data. It provides Billance AI and local processing with a converter template.

Free & Premium

Both converter modes are Premium features. Billance AI uses the page allowance supplied by the backend for the current billing period. Local mode works without an AI upload but requires a matching converter template.

Billance AI

Billance AI is useful for changing layouts and documents without a prepared template. Before starting, you can review the selection, expected page usage, and remaining allowance. Analysis runs online; afterwards, you review the values before transferring them to a new invoice draft.

Local with a template

Local mode is useful for recurring document layouts. Select a converter template, let Billance read its marked regions locally, and then review the detected fields. You can manually assign or correct values when needed.

Desktop app

Supported files in the desktop app

Both modes accept PDF, PNG, JPG/JPEG, WEBP, AVIF, DOCX, ODT, XLSX, and XLSM. Images and Office documents are converted into a suitable PDF format before processing. Multiple files can be prepared together, and pages can be excluded from PDF and Office documents in advance.

For scanned or image-based documents, local processing may download additional OCR resources once. Billance shows a notice before that download.

You can select files or drag and drop them into the converter.

Choose the invoice PDF

If your selection contains a PDF, you decide right in the converter with Keep the original PDF what the new invoice will look like:

  • Off: Billance creates a new PDF in your design. The original is only read.
  • On: The invoice uses the original PDF and the e-invoice data is embedded into it. Design and print-only options (date format, retention notice) no longer apply and are dimmed while you create the invoice.

The default comes from the PDF settings; you can switch it at any time in the converter and later in the invoice form.

Review the result

After a successful conversion the prefilled invoice draft opens directly. The values taken over are highlighted in the form, and a summary shows what was recognized and which recipients, payment accounts, or products match existing records.

Still check the recipient, number, date, line items, tax information, and totals before you create the invoice. Detected payment data is never applied without review. If barely anything was recognized, the converter stays on its result page and offers you the manual assignment.