SlideShare

 SlideShare  is a presentation hosting/sharing silo, owned by LinkedIn, which is now owned by Microsoft, that requires Javascript just to navigate to next/previous slides.

Slide decks can be uploaded, are converted to images and can then be viewed in the browser.

js;dn
SlideShare heavily (and often unnecessarily) depends on Javascript, e.g. just to navigate to next/previous slides. Thus js;dn (Javascript Required; Didn't Navigate), related to but not quite as bad as js;dr.