Nyctography

A form of substitution cipher writing created by Lewis Carroll
Published on Saturday 21 March 2026

To continue my journey of numerals and alphabets like Kaktovik Numerals and Cistercian Numerals I kept a note of others to work on later, I've finally gotten round to producing a site for this too.

Nyctography is a form of substitution cipher writing created by Lewis Carroll (Charles Lutwidge Dodgson) in 1891.

Nyctography

Back to my tool of the month GitHub Copilot assigning it to the following issue #1.

It produced a very clean site with 3 main parts:

  • The Square Alphabet
  • Encoder
  • Character Builder

Nyctography

Site

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