@yaxu @firstname.lastname@example.org It's really nothing fancy about my setup, just some precompiled html + css.
At one point it was hand-written html, but it became cumbersome to embed diagrams and increment repl counter so I later switched to hakyll, mainly because it's easier to hack pandoc in haskell. Though any static site generator should give you similar results as long as you can control the compiler.
The diagrams and formulae are all offline rendered using latex, converted to svg using dvisvgm, with some post-processing to adjust baseline, so basically I have every tex package at my disposal, though I mainly just use tikz. I don't know why pandoc does some extra work to parse tex code in a markdown file into the AST, but it was quite convenient since all I need to do is to compile the tex code in the AST into an SVG.
Design-wise, it's just an attempt to write tex documents on the web. The notes were supposed to be tex documents, but I don't like handling pagination for diagrams so I translated the entire style to the web.
As for tig, it is created using stagit .
We are an instance for discussions around cultural freedom, experimental, new media art, net and computational culture, and things like that.