FreeType

Portions of this software are copyright © 2023 The FreeType Project (https://freetype.org). All rights reserved.

https://freetype.org/license.html
FreeType License

Bootstrap

https://getbootstrap.jp/docs/5.3/about/license/
the MIT License

jQuery

https://jquery.com/license/
the MIT License

qrcode.js

https://davidshimjs.github.io/qrcodejs/
the MIT License

jsQR

https://github.com/cozmo/jsQR/blob/master/LICENSE
Apache-2.0 license

Google Fonts

https://fonts.google.com/icons
Apache-2.0 license
https://fonts.google.com/
SIL OPEN FONT LICENSE

Public domain vectors

https://publicdomainvectors.org/en/about-us/

OtoLogic

BGM by OtoLogic(CC BY 4.0)

https://otologic.jp/free/license.html