Open-source licences
Last updated October 27, 2026
HeyInvoices uses open-source software. Its code and fonts belong to their authors and are used under their licences. This page lists what you download when you press the Download button and creates your PDF on your own device.
What is used
- Roboto, a font by the Roboto Project Authors, used in the PDF library and in the PDFs you create. Licence: SIL Open Font License, Version 1.1.
- pdfmake, the library that builds the PDF. Licence: MIT. It includes other open-source libraries, such as pdfkit, fontkit, linebreak, restructure and core-js, which use MIT and similar licences.
Full licence texts
The complete notices, with each licence text and copyright line, are in one plain-text file:third-party-licenses.txt.
The text, design and code of this site itself are covered by the terms of use, not by these licences.