Sources & licenses
E-Invoice Studio credits & licenses
What E-Invoice Studio is built with, and the licenses that apply.
What we built
LoschaZ designed and wrote E-Invoice Studio: the invoice form, the EN 16931 calculation, the CII writer, the CII and UBL readers, the checks, the PDF/A-3 layout with the embedded XML, the payment QR code, the color profile and these pages. Everything runs in your browser; the components below are served from our host, unmodified.
Components & licenses
- pdf-lib 1.17.1 (Andrew Dillon) writes the PDF/A-3 file and reads e-invoices inside PDFs: github.com/Hopding/pdf-lib, MIT License (bundles pako, MIT and Zlib).
- fontkit (Devon Govett, in the pdf-lib edition 1.1.1) embeds the font subsets: github.com/Hopding/fontkit, MIT License.
- Inter (Rasmus Andersson), the typeface of the invoices: SIL Open Font License 1.1.
The full license texts are in the third-party notices.
Data sources
The code lists (document types, units, payment means, VAT categories, exemption codes, electronic address schemes) are the public lists of EN 16931, UN/CEFACT and the CEF eInvoicing service; the rules follow EN 16931 and the XRechnung 3.0 specification of KoSIT. Labels and messages are LoschaZ wording. The generated files were tested with the KoSIT validator, Mustang and veraPDF.
Our changes
None of the components is modified. They load only when you create or open a PDF.