This is re-implemented by so many. (HN user megous https://news.ycombinator.com/item?id=13226170 Dec 2016.) It would be nice to find a way to share this work, but the variety of tools used often make the customizations too custom (or maybe this is just the most common reason why creators feel there is no reason to share?).

Is anyone aware of any repositories where the customization required to obtain the important content is maintained by a community?

Most site also display data in a much easier way if you identify as googlebot