Here's my more-or-less decade old “image to braille converter”: https://max-m.github.io/misc/braille/index.html https://max-m.github.io/misc/braille/index.html

Here's my more-or-less decade old “image to braille converter”: https://max-m.github.io/misc/braille/index.html https://max-m.github.io/misc/braille/index.html The source code is unminified and unobfuscated. Another somewhat similar toy is https://max-m.github.io/InstaECB/index.html https://max-m.github.io/InstaECB/index.html :)