This is a heavily interactive web application, and JavaScript is required. Simple HTML interfaces are possible, but that is not what this is.
Profile
Genji
genjiapp.com
did:plc:jct3aguhcn4r374ga5wvo226
Indie macOS/iOS app developer in Japan. Developed: Murasaki, Keyknockr, ImageDiff, Silver Baton, Mailto Interceptor, Emoji IM, Palmtop Bell, KanjiMagnifier, RingerVolume
https://genjiapp.com (Japanese)
https://genjiapp.com/index_en.html (English)