aiDoks is a free e-invoicing toolkit for small businesses and freelancers in the EU. Convert PDF invoices to PEPPOL BIS 3.0 UBL 2.1 XML using AI OCR, generate e-invoices from scratch with a guided form, validate any UBL XML against the latest EN 16931 rules, and export PDF copies for archive. No signup required for the basic generator. Multi-language (EN/ET/LV/LT). Built for the new wave of EU e-invoicing mandates.