Open-source licences

Thumbs QR is built with the following open-source software. Thank you to everyone who made it.

QR Code generator library (Project Nayuki) (MIT). Turns text into the pattern of a QR code. Licence text. Source code.
zxing-cpp (Apache-2.0). Reads codes back for the check under the code. Licence text. Source code.
zxing-wasm (MIT). Runs zxing-cpp in the browser, as WebAssembly. Licence text. Source code.
pdf-lib (MIT). Writes the PDF files. Licence text. Source code.
pako (MIT and Zlib). Compression inside pdf-lib. Licence text. Source code.
@pdf-lib/standard-fonts and upng (MIT). Parts of pdf-lib. Licence text. Source code.
tslib (0BSD). Small helpers used by pdf-lib. Licence text. Source code.
Noto Sans (SIL Open Font License 1.1). The letters of labels inside saved codes. Licence text. Source code.
Lucide (ISC). The icons. Licence text. Source code.