For the charts he's using chart-js with a chartjs-plugin-rough [1] to give it the hand-drawn look. Chardin Js for the overlays [2] and it looks like the rest of

For the charts he's using chart-js with a chartjs-plugin-rough [1] to give it the hand-drawn look. Chardin Js for the overlays [2] and it looks like the rest of the graphics are created by hand using Sodipod or Inkscape [3]. ---- [1] https://nagix.github.io/chartjs-plugin-rough/ https://nagix.github.io/chartjs-plugin-rough/ [2] https://heelhook.github.io/chardin.js/ https://heelhook.github.io/chardin.js/ [3] https://inkscape.org/ https://inkscape.org/