There are some posts about it: https://pudding.cool/process/how-to-implement-scrollytelling/ https://pudding.cool/process/how-to-implement-scrollytelling... An

There are some posts about it: https://pudding.cool/process/how-to-implement-scrollytelling/ https://pudding.cool/process/how-to-implement-scrollytelling... And a whole category on it: https://pudding.cool/#how https://pudding.cool/#how And a repo for a "scrollytelling" library by the author: https://github.com/russellgoldenberg/scrollama/ https://github.com/russellgoldenberg/scrollama/ Source inspection is hard as it's all been bundled, but you can see some of the json data in there, and some custom functions to do the plot interactions. The plot code is almost certainly D3 (based on some of the non-obfuscated calls).