Yet another popular extension has disappeared under mysterious circumstances. It seems that its author might have requested its removal, but if so then even in that case the longstanding Mozilla policy of telling its users absolutely nothing about what happened applies.

It happened a month ago but it took me this long to notice since the feature I like best only recently stopped working. It's the sort of thing that requires periodic updates to keep up with changes to the youtube UI.

Does anyone know of another extension that can automatically resize the youtube player to fill the browser window? Or, for that matter, the invidious one?