The software, type and artwork have different licenses. Here is what belongs to each.
Updated October 16, 2026
Offline PDF tools
The current downloadable tools use pdf-lib 1.17.1, under the MIT License. Its bundled dependency notices are preserved in the library distribution. The Foldlark HTML tool source is also provided under the MIT License, with its license included in each tool ZIP. pdf-lib source and project.
Bookbinder JS
Bookbinder JS was evaluated during the original concept research. The current downloadable implementation does not include its code. It is therefore not presented as an MPL-based derivative. If future versions incorporate it, the relevant MPL-2.0 source and notice obligations will need to be met for that distribution.
Storefront assets
Barlow Condensed, Manrope and DM Sans are licensed under the SIL Open Font License. Phosphor icons use the MIT License. Corresponding notices are stored with the local assets. Lifestyle publication imagery is AI-generated illustration. Product previews are rendered from the actual supplied PDF pages.
Proprietary material
Original printable templates, guides and storefront copy are provided under the terms applicable to those materials. Open-source licenses govern their own software components regardless of the store's proprietary product license.