The Bear note-taking app has a new parser that downloads web pages, converts them to markdown, and strips out the clutter. It works quite well.
The DevonThink parser is, on the other hand, horrible. Worst part of an otherwise fine program. Unable to process an uncluttered view.
Devon Technologies needs to get to work on this; it’s a solved problem. Safari Reader, Instapaper, Pocket and the Mercury Parser are all great — no comparison to DevonThink at all.