aktenadler

Tools for invoicing, PDF and tax

A growing toolbox for e-invoicing, PDF work and German tax tasks. Everything runs locally in your browser — no upload, no account.

Invoicing tools

Create, check, view and convert XRechnung and ZUGFeRD e-invoices. E-invoicing overview (in German)

Create e-invoice Generate XRechnung and ZUGFeRD invoices — free, no sign-up. Check XRechnung Validate against EN 16931, Schematron rules and arithmetic. View e-invoice Open XRechnung and ZUGFeRD files in a human-readable view. Convert e-invoice Convert between XRechnung (UBL) and ZUGFeRD (CII).

PDF tools

Compare, merge, split and build PDFs — entirely in the browser.

Compare PDFs Text and visual diff of two PDFs, down to the word. PDF toolkit Merge, split, rotate and extract text or ZUGFeRD XML. PDForge Assemble and edit PDF documents, page by page.

Tax microtools

Small everyday helpers for invoicing and accounting.

Check IBAN Validate the check digits, country code and length. Check VAT ID Format and check-digit validation for every EU country. Gross-net calculator Calculate VAT — from gross to net and back. Invoice QR code Generate an EPC QR code for fast, error-free payment.